HomeMy WebLinkAboutAir PM Results February 2024Thursday, February 1, 2024
North Hangar Fire Incident I City of Tustin
Air Quality Updates: Particulate Matter
Air monitoring and sampling locations have been set up around the perimeter of the hangar and
in surrounding communities to provide real-time information on Particulate Matter (PM) in the
air. While the units are in place, an average reading for the last 24 hours will be provided for the
public's reference. Any questions regarding these numbers should be directed to the call center
at 714-426-2444.
Monitoring Air Quality for Sensitive Individuals
The Incident Management Team Environmental Group is monitoring the air quality around the
incident for any readings above 154 micrograms per cubic meter (ug/m3), which may cause
individuals in sensitive groups to experience health effects. This is a moderate threshold that is
less likely to affect the general public.
What is Particulate Matter?
"Particulate matter," also known as particle pollution or PM, is a complex mixture of extremely
small particles and liquid droplets that exists in the environment including pollen, dust, and soil.
Typical particulate matter for the area ranges from 3 to 67 ug/m3. The concentration range is
based on sampling results collected by South Coast AQMD in Anaheim, CA, which was the
closest available dataset in proximity to the site. For more information about air quality and
monitoring, visit the AirNow website at www.airnow.gov.
Good Moderate
(0 to 54) (55 to 154)
Unhealthy for Wnhealthy
Sensitive Groups (255 to Unhealthy
EL(155 to 254)354)
See below for further category descriptions.
** Data gap due to instrument malfunction.
Very Unhealthy Hazardous
(355 to 424) (425-504)
Location
Columbus Square Park
Period Ending
2/1/2024 8 AM
Matter
16
Level of Concern
Good
Fire Station 37
2/1/2024 8 AM
15
Good
Hangar Fenceline - E Side
2/1/2024 8 AM
17
Good
Hangar Fenceline - N Center
2/1/2024 8 AM
20
Good
Hangar Fenceline - N Corner
2/1/2024 8 AM
18
Good
Hangar Fenceline - NE Corner
2/1/2024 8 AM
17
Good
Hangar Fenceline - NE Side
2/1/2024 8 AM
18
Good
Hangar Fenceline - S Corner
**
**
**
Hangar Fenceline - S Side
2/1/2024 8 AM
22
Good
Hangar Fenceline - SW Corner
2/1/2024 8 AM
18
Good
Hangar Fenceline - SW Side
2/1/2024 8 AM
18
Good
Hangar Fenceline - W Side
2/1/2024 8 AM
17
Good
Heritage Elementary
2/1/2024 8 AM
18
Good
Legacy Academy
2/1/2024 8 AM
21
Good
Legacy Road
2/1/2024 8 AM
23
Good
Moffett and Tustin Ranch
2/1/2024 8 AM
25
Good
OC Animal Shelter
2/1/2024 8 AM
21
Good
Valencia and Armstrong
2/1/2024 8 AM
17
Good
Valencia and Columbus Square
2/1/2024 8 AM
17
Good
Valencia and Legacy
2/1/2024 8 AM
21
Good
Victory and Tustin Ranch Rd.
2/1/2024 8 AM
22
Good
Warner and Armstrong
2/1/2024 8 AM
19
Good
Warner Avenue
2/1/2024 8 AM
25
Good
Category Descriptions
Color
Green
Good
0 to 54
Air quality is satisfactory, and air
pollution poses little or no risk.
Yellow
Moderate
55 to 154
Air quality is acceptable. However,
there may be a risk for some
people, particularly those who are
unusually sensitive to air pollution.
Orange
Unhealthy for Sensitive
155 to 254
Members of sensitive groups may
Groups
experience health effects. The
general public is less likely to be
affected.
Red
Unhealthy
255 to 354
Some members of the general
public may experience health
effects; members of sensitive
groups may experience more
serious health effects.
Purple
Very Unhealthy
355 to 424
Health alert: The risk of health
effects is increased for everyone.
425 to 504
Health warning of - .-
more
conditions: everyone is likely
• be affected.
Friday, February 2, 2024
North Hangar Fire Incident I City of Tustin
Aik quality Updates: Particulate Matter
Air monitoring and sampling locations have been set up around the perimeter of the hangar and
in surrounding communities to provide real-time information on Particulate Matter (PM) in the
air. While the units are in place, an average reading for the last 24 hours will be provided for the
public's reference. Any questions regarding these numbers should be directed to the call center
at 714-426-2444.
Monitoring Air Quality for Sensitive Individuals
The Incident Management Team Environmental Group is monitoring the air quality around the
incident for any readings above 154 micrograms per cubic meter (ug/m3), which may cause
individuals in sensitive groups to experience health effects. This is a moderate threshold that is
less likely to affect the general public.
What is Particulate Matter?
"Particulate matter," also known as particle pollution or PM, is a complex mixture of extremely
small particles and liquid droplets that exists in the environment including pollen, dust, and soil.
Typical particulate matter for the area ranges from 3 to 67 ug/m3. The concentration range is
based on sampling results collected by South Coast AQMD in Anaheim, CA, which was the
closest available dataset in proximity to the site. For more information about air quality and
monitoring, visit the AirNow website at www.airnow.gov.
Good Moderate Unhealthy for Unhealthy Very Unhealthy
(0 to 54) (55 to 154) Sensitive Groups (255 to 354) (355 to 424)
IL(155 to 254)
See below for further category descriptions.
** Data gap due to instrument malfunction.
Location
Columbus Square Park
24-Hour
Period Ending
2/2/2024 8 AM
Matter
7
Level of •
Good
Fire Station 37
2/2/2024 8 AM
7
Good
Hangar Fenceline - E Side
2/2/2024 8 AM
8
Good
Hangar Fenceline - N Center
2/2/2024 8 AM
9
Good
Hangar Fenceline - N Corner
2/2/2024 8 AM
9
Good
Hangar Fenceline - NE Corner
2/2/2024 8 AM
8
Good
Hangar Fenceline - NE Side
2/2/2024 8 AM
10
Good
Hangar Fenceline - S Corner
2/2/2024 8 AM
15
Good
Hangar Fenceline - S Side
2/2/2024 8 AM
9
Good
Hangar Fenceline - SW Corner
2/2/2024 8 AM
8
Good
Hangar Fenceline - SW Side
2/2/2024 8 AM
10
Good
Hangar Fenceline - W Side
2/2/2024 8 AM
8
Good
Heritage Elementary
2/2/2024 1 AM
8
Good
Legacy Academy
2/2/2024 8 AM
9
Good
Legacy Road
2/2/2024 8 AM
10
Good
Moffett and Tustin Ranch
2/2/2024 8 AM
12
Good
OC Animal Shelter
2/2/2024 8 AM
10
Good
Valencia and Armstrong
2/2/2024 8 AM
7
Good
Valencia and Columbus Square
2/2/2024 8 AM
7
Good
Valencia and Legacy
2/2/2024 8 AM
10
Good
Victory and Tustin Ranch Rd.
2/2/2024 8 AM
11
Good
Warner and Armstrong
2/2/2024 8 AM
7
Good
Warner Avenue
2/2/2024 8 AM
11
Good
Category Descriptions
Color
Green
Good
0 to 54
Air quality is satisfactory, and air
pollution poses little or no risk.
Yellow
Moderate
55 to 154
Air quality is acceptable. However,
there may be a risk for some
people, particularly those who are
unusually sensitive to air pollution.
Orange
Unhealthy for Sensitive
155 to 254
Members of sensitive groups may
Groups
experience health effects. The
general public is less likely to be
affected.
Red
Unhealthy
255 to 354
Some members of the general
public may experience health
effects; members of sensitive
groups may experience more
serious health effects.
Purple
Very Unhealthy
355 to 424
Health alert: The risk of health
effects is increased for everyone.
425 to 504
Health warning of - .-
more
conditions: everyone is likely
• be affected.
Saturday, February 3, 2024
North Hangar Fire Incident I City of Tustin
Aik quality Updates: Particulate Matter
Air monitoring and sampling locations have been set up around the perimeter of the hangar and
in surrounding communities to provide real-time information on Particulate Matter (PM) in the
air. While the units are in place, an average reading for the last 24 hours will be provided for the
public's reference. Any questions regarding these numbers should be directed to the call center
at 714-426-2444.
Monitoring Air Quality for Sensitive Individuals
The Incident Management Team Environmental Group is monitoring the air quality around the
incident for any readings above 154 micrograms per cubic meter (ug/m3), which may cause
individuals in sensitive groups to experience health effects. This is a moderate threshold that is
less likely to affect the general public.
What is Particulate Matter?
"Particulate matter," also known as particle pollution or PM, is a complex mixture of extremely
small particles and liquid droplets that exists in the environment including pollen, dust, and soil.
Typical particulate matter for the area ranges from 3 to 67 ug/m3. The concentration range is
based on sampling results collected by South Coast AQMD in Anaheim, CA, which was the
closest available dataset in proximity to the site. For more information about air quality and
monitoring, visit the AirNow website at www.airnow.gov.
Good Moderate Unhealthy for Unhealthy Very Unhealthy
(0 to 54) (55 to 154) Sensitive Groups (255 to 354) (355 to 424)
IL(155 to 254)
See below for further category descriptions.
** Data gap due to instrument malfunction.
Location
Columbus Square Park
24-Hour
Period Ending
2/3/2024 8 AM
Matter
5
Level of •
Good
Fire Station 37
2/3/2024 8 AM
5
Good
Hangar Fenceline - E Side
2/3/2024 8 AM
5
Good
Hangar Fenceline - N Center
2/3/2024 8 AM
5
Good
Hangar Fenceline - N Corner
2/3/2024 8 AM
5
Good
Hangar Fenceline - NE Corner
2/3/2024 8 AM
5
Good
Hangar Fenceline - NE Side
2/3/2024 8 AM
6
Good
Hangar Fenceline - S Corner
2/3/2024 8 AM
5
Good
Hangar Fenceline - S Side
2/3/2024 8 AM
8
Good
Hangar Fenceline - SW Corner
2/3/2024 8 AM
5
Good
Hangar Fenceline - SW Side
2/3/2024 8 AM
7
Good
Hangar Fenceline - W Side
2/3/2024 8 AM
5
Good
Heritage Elementary
2/3/2024 8 AM
6
Good
Legacy Academy
2/3/2024 8 AM
6
Good
Legacy Road
2/3/2024 8 AM
5
Good
Moffett and Tustin Ranch
2/3/2024 8 AM
7
Good
OC Animal Shelter
2/3/2024 8 AM
7
Good
Valencia and Armstrong
2/3/2024 8 AM
4
Good
Valencia and Columbus Square
2/3/2024 8 AM
5
Good
Valencia and Legacy
2/3/2024 8 AM
6
Good
Victory and Tustin Ranch Rd.
2/3/2024 8 AM
10
Good
Warner and Armstrong
2/3/2024 8 AM
2
Good
Warner Avenue
2/3/2024 8 AM
4
Good
Category Descriptions
Color
Green
Good
0 to 54
Air quality is satisfactory, and air
pollution poses little or no risk.
Yellow
Moderate
55 to 154
Air quality is acceptable. However,
there may be a risk for some
people, particularly those who are
unusually sensitive to air pollution.
Orange
Unhealthy for Sensitive
155 to 254
Members of sensitive groups may
Groups
experience health effects. The
general public is less likely to be
affected.
Red
Unhealthy
255 to 354
Some members of the general
public may experience health
effects; members of sensitive
groups may experience more
serious health effects.
Purple
Very Unhealthy
355 to 424
Health alert: The risk of health
effects is increased for everyone.
425 to 504
Health warning of - .-
more
conditions: everyone is likely
• be affected.
Sunday, February 4, 2024
North Hangar Fire Incident I City of Tustin
Aik quality Updates: Particulate Matter
Air monitoring and sampling locations have been set up around the perimeter of the hangar and
in surrounding communities to provide real-time information on Particulate Matter (PM) in the
air. While the units are in place, an average reading for the last 24 hours will be provided for the
public's reference. Any questions regarding these numbers should be directed to the call center
at 714-426-2444.
Monitoring Air Quality for Sensitive Individuals
The Incident Management Team Environmental Group is monitoring the air quality around the
incident for any readings above 154 micrograms per cubic meter (ug/m3), which may cause
individuals in sensitive groups to experience health effects. This is a moderate threshold that is
less likely to affect the general public.
What is Particulate Matter?
"Particulate matter," also known as particle pollution or PM, is a complex mixture of extremely
small particles and liquid droplets that exists in the environment including pollen, dust, and soil.
Typical particulate matter for the area ranges from 3 to 67 ug/m3. The concentration range is
based on sampling results collected by South Coast AQMD in Anaheim, CA, which was the
closest available dataset in proximity to the site. For more information about air quality and
monitoring, visit the AirNow website at www.airnow.gov.
Good Moderate Unhealthy for Unhealthy Very Unhealthy
(0 to 54) (55 to 154) Sensitive Groups (255 to 354) (355 to 424)
IL(155 to 254)
See below for further category descriptions.
** Data gap due to instrument malfunction.
Location
Columbus Square Park
24-Hour
Period Ending
2/4/2024 8 AM
Matter
4
Level of •
Good
Fire Station 37
2/4/2024 8 AM
4
Good
Hangar Fenceline - E Side
2/4/2024 8 AM
4
Good
Hangar Fenceline - N Center
2/4/2024 8 AM
4
Good
Hangar Fenceline - N Corner
2/4/2024 8 AM
5
Good
Hangar Fenceline - NE Corner
2/4/2024 8 AM
4
Good
Hangar Fenceline - NE Side
2/4/2024 8 AM
5
Good
Hangar Fenceline - S Corner
2/4/2024 8 AM
4
Good
Hangar Fenceline - S Side
2/4/2024 8 AM
7
Good
Hangar Fenceline - SW Corner
2/4/2024 8 AM
4
Good
Hangar Fenceline - SW Side
2/4/2024 8 AM
10
Good
Hangar Fenceline - W Side
2/4/2024 8 AM
4
Good
Heritage Elementary
2/4/2024 8 AM
4
Good
Legacy Academy
2/4/2024 8 AM
3
Good
Legacy Road
2/4/2024 8 AM
5
Good
Moffett and Tustin Ranch
2/4/2024 8 AM
6
Good
OC Animal Shelter
2/4/2024 8 AM
6
Good
Valencia and Armstrong
2/4/2024 8 AM
4
Good
Valencia and Columbus Square
2/4/2024 8 AM
3
Good
Valencia and Legacy
2/4/2024 8 AM
5
Good
Victory and Tustin Ranch Rd.
2/4/2024 8 AM
7
Good
Warner and Armstrong
2/4/2024 8 AM
3
Good
Warner Avenue
2/4/2024 8 AM
4
Good
Category Descriptions
Color
Green
Good
0 to 54
Air quality is satisfactory, and air
pollution poses little or no risk.
Yellow
Moderate
55 to 154
Air quality is acceptable. However,
there may be a risk for some
people, particularly those who are
unusually sensitive to air pollution.
Orange
Unhealthy for Sensitive
155 to 254
Members of sensitive groups may
Groups
experience health effects. The
general public is less likely to be
affected.
Red
Unhealthy
255 to 354
Some members of the general
public may experience health
effects; members of sensitive
groups may experience more
serious health effects.
Purple
Very Unhealthy
355 to 424
Health alert: The risk of health
eryone.
425 to 04
Health warning. emergency
more
conditions: everyone is likely
..- affected.
Monday, February 5, 2024
North Hangar Fire Incident I City of Tustin
Air Quality Updates: Particulate Matter
Air monitoring and sampling locations have been set up around the perimeter of the hangar and
in surrounding communities to provide real-time information on Particulate Matter (PM) in the
air. While the units are in place, an average reading for the last 24 hours will be provided for the
public's reference. Any questions regarding these numbers should be directed to the call center
at 714-426-2444.
Monitoring Air Quality for Sensitive Individuals
The Incident Management Team Environmental Group is monitoring the air quality around the
incident for any readings above 154 micrograms per cubic meter (ug/m3), which may cause
individuals in sensitive groups to experience health effects. This is a moderate threshold that is
less likely to affect the general public.
What is Particulate Matter?
"Particulate matter," also known as particle pollution or PM, is a complex mixture of extremely
small particles and liquid droplets that exists in the environment including pollen, dust, and soil.
Typical particulate matter for the area ranges from 3 to 67 ug/m3. The concentration range is
based on sampling results collected by South Coast AQMD in Anaheim, CA, which was the
closest available dataset in proximity to the site. For more information about air quality and
monitoring, visit the AirNow website at www.airnow.gov.
Good Moderate
(0 to 54) (55 to 154)
Unhealthy for �nhealthy
Sensitive Groups (255 to Unhealthy
(155 to 254)354)
* See below for further category descriptions.
** Data gap due to instrument malfunction.
Very UnhealthyHazardous
(355 to 424) (425-504)
Columbus Square Park
PeriodLocation 24-Hour
Ending
2/5/2024 8 AM
Particulate
Matter
3
Level of Concern
Good
Fire Station 37
2/5/2024 8 AM
3
Good
Hangar Fenceline - E Side
2/5/2024 8 AM
3
Good
Hangar Fenceline - N Center
2/5/2024 8 AM
4
Good
Hangar Fenceline - N Corner
2/5/2024 8 AM
4
Good
Hangar Fenceline - NE Corner
2/5/2024 8 AM
4
Good
Hangar Fenceline - NE Side
2/5/2024 8 AM
4
Good
Hangar Fenceline - S Corner
2/5/2024 8 AM
3
Good
Hangar Fenceline - S Side
2/5/2024 8 AM
5
Good
Hangar Fenceline - SW Corner
2/5/2024 8 AM
4
Good
Hangar Fenceline - SW Side
2/5/2024 8 AM
5
Good
Hangar Fenceline - W Side
2/5/2024 8 AM
4
Good
Heritage Elementary
2/5/2024 8 AM
3
Good
Legacy Academy
2/5/2024 8 AM
4
Good
Legacy Road
2/5/2024 8 AM
4
Good
Moffett and Tustin Ranch
2/5/2024 8 AM
5
Good
OC Animal Shelter
2/5/2024 8 AM
5
Good
Valencia and Armstrong
2/5/2024 8 AM
3
Good
Valencia and Columbus Square
2/5/2024 8 AM
3
Good
Valencia and Legacy
2/5/2024 8 AM
4
Good
Victory and Tustin Ranch Rd.
2/5/2024 8 AM
6
Good
Warner and Armstrong
2/5/2024 3 AM
3
Good
Warner Avenue
2/5/2024 8 AM
3
Good
Category Descriptions
Color
Green
Good
0 to 54
Air quality is satisfactory, and air
pollution poses little or no risk.
Yellow
Moderate
55 to 154
Air quality is acceptable. However,
there may be a risk for some
people, particularly those who are
unusually sensitive to air pollution.
Orange
Unhealthy for Sensitive
155 to 254
Members of sensitive groups may
Groups
experience health effects. The
general public is less likely to be
affected.
Unhealthy
255 to 354
Some members of the general
public may experience health
effects; members of sensitive
groups may experience more
serious health effects.
Purple
Very Unhealthy
355 to 424
Health alert: The risk of health
effects is increased for everyone.
Hazardous
425 "to504
arning of emergency
Maroon
-
conditions: ever. . likely
..- affected.
Tuesday, February 6, 2024
North Hangar Fire Incident I City of Tustin
Aik quality Updates: Particulate Matter
Air monitoring and sampling locations have been set up around the perimeter of the hangar and
in surrounding communities to provide real-time information on Particulate Matter (PM) in the
air. While the units are in place, an average reading for the last 24 hours will be provided for the
public's reference. Any questions regarding these numbers should be directed to the call center
at 714-426-2444.
Monitoring Air Quality for Sensitive Individuals
The Incident Management Team Environmental Group is monitoring the air quality around the
incident for any readings above 154 micrograms per cubic meter (ug/m3), which may cause
individuals in sensitive groups to experience health effects. This is a moderate threshold that is
less likely to affect the general public.
What is Particulate Matter?
"Particulate matter," also known as particle pollution or PM, is a complex mixture of extremely
small particles and liquid droplets that exists in the environment including pollen, dust, and soil.
Typical particulate matter for the area ranges from 3 to 67 ug/m3. The concentration range is
based on sampling results collected by South Coast AQMD in Anaheim, CA, which was the
closest available dataset in proximity to the site. For more information about air quality and
monitoring, visit the AirNow website at www.airnow.gov.
Good Moderate Unhealthy for Unhealthy Very Unhealthy
(0 to 54) (55 to 154) Sensitive Groups (255 to 354) (355 to 424)
IL(155 to 254)
See below for further category descriptions.
** Data gap due to instrument malfunction.
Location
Columbus Square Park
24-Hour
Period Ending
2/6/2024 8 AM
Matter
3
Level of •
Good
Fire Station 37
2/6/2024 8 AM
17
Good
Hangar Fenceline - E Side
2/6/2024 8 AM
4
Good
Hangar Fenceline - N Center
2/6/2024 8 AM
4
Good
Hangar Fenceline - N Corner
2/6/2024 8 AM
4
Good
Hangar Fenceline - NE Corner
2/6/2024 8 AM
4
Good
Hangar Fenceline - NE Side
2/6/2024 8 AM
4
Good
Hangar Fenceline - S Corner
2/6/2024 8 AM
4
Good
Hangar Fenceline - S Side
2/6/2024 8 AM
4
Good
Hangar Fenceline - SW Corner
2/6/2024 8 AM
4
Good
Hangar Fenceline - SW Side
2/6/2024 8 AM
5
Good
Hangar Fenceline - W Side
2/6/2024 8 AM
4
Good
Heritage Elementary
2/6/2024 8 AM
4
Good
Legacy Academy
2/6/2024 8 AM
5
Good
Legacy Road
2/6/2024 8 AM
5
Good
Moffett and Tustin Ranch
2/6/2024 8 AM
7
Good
OC Animal Shelter
2/6/2024 8 AM
4
Good
Valencia and Armstrong
2/6/2024 8 AM
4
Good
Valencia and Columbus Square
2/6/2024 8 AM
4
Good
Valencia and Legacy
2/6/2024 8 AM
5
Good
Victory and Tustin Ranch Rd.
2/6/2024 8 AM
6
Good
Warner and Armstrong
2/6/2024 8 AM
5
Good
Warner Avenue
2/6/2024 8 AM
4
Good
Category Descriptions
Color
Green
Good
0 to 54
Air quality is satisfactory, and air
pollution poses little or no risk.
Yellow
Moderate
55 to 154
Air quality is acceptable. However,
there may be a risk for some
people, particularly those who are
unusually sensitive to air pollution.
Orange
Unhealthy for Sensitive
155 to 254
Members of sensitive groups may
Groups
experience health effects. The
general public is less likely to be
affected.
Red
Unhealthy
255 to 354
Some members of the general
public may experience health
effects; members of sensitive
groups may experience more
serious health effects.
Purple
Very Unhealthy
355 to 424
Health alert: The risk of health
eryone.
425 to 04
Health warning. emergency
more
conditions: everyone is likely
..- affected.
Wednesday, February 7, 2024
North Hangar Fire Incident I City of Tustin
Aik quality updates: Particulate Matter
Air monitoring and sampling locations have been set up around the perimeter of the hangar and
in surrounding communities to provide real-time information on Particulate Matter (PM) in the
air. While the units are in place, an average reading for the last 24 hours will be provided for the
public's reference. Any questions regarding these numbers should be directed to the call center
at 714-426-2444.
Monitoring Air Quality for Sensitive Individuals
The Incident Management Team Environmental Group is monitoring the air quality around the
incident for any readings above 154 micrograms per cubic meter (ug/m3), which may cause
individuals in sensitive groups to experience health effects. This is a moderate threshold that is
less likely to affect the general public.
What is Particulate Matter?
"Particulate matter," also known as particle pollution or PM, is a complex mixture of extremely
small particles and liquid droplets that exists in the environment including pollen, dust, and soil.
Typical particulate matter for the area ranges from 3 to 67 ug/m3. The concentration range is
based on sampling results collected by South Coast AQMD in Anaheim, CA, which was the
closest available dataset in proximity to the site. For more information about air quality and
monitoring, visit the AirNow website at www.airnow.gov.
Good Moderate Unhealthy for Unhealthy Very Unhealthy
(0 to 54) (55 to 154) Sensitive Groups (255 to 354) (355 to 424)
IL(155 to 254)
See below for further category descriptions.
** Data gap due to instrument malfunction.
Location
Columbus Square Park
24-Hour
Period Ending
2/7/2024 8 AM
Matter
4
Level of •
Good
Fire Station 37
2/7/2024 8 AM
4
Good
Hangar Fenceline - E Side
2/7/2024 8 AM
5
Good
Hangar Fenceline - N Center
2/7/2024 8 AM
5
Good
Hangar Fenceline - N Corner
2/7/2024 8 AM
4
Good
Hangar Fenceline - NE Corner
2/7/2024 8 AM
5
Good
Hangar Fenceline - NE Side
2/7/2024 8 AM
5
Good
Hangar Fenceline - S Corner
2/7/2024 8 AM
4
Good
Hangar Fenceline - S Side
2/7/2024 8 AM
5
Good
Hangar Fenceline - SW Corner
2/7/2024 8 AM
5
Good
Hangar Fenceline - SW Side
2/7/2024 8 AM
5
Good
Hangar Fenceline - W Side
2/7/2024 8 AM
5
Good
Heritage Elementary
2/7/2024 8 AM
5
Good
Legacy Academy
2/7/2024 8 AM
5
Good
Legacy Road
2/7/2024 8 AM
5
Good
Moffett and Tustin Ranch
2/7/2024 8 AM
7
Good
OC Animal Shelter
2/7/2024 8 AM
6
Good
Valencia and Armstrong
2/7/2024 8 AM
5
Good
Valencia and Columbus Square
2/7/2024 8 AM
4
Good
Valencia and Legacy
2/7/2024 8 AM
6
Good
Victory and Tustin Ranch Rd.
2/7/2024 8 AM
6
Good
Warner and Armstrong
2/7/2024 8 AM
4
Good
Warner Avenue
2/7/2024 8 AM
4
Good
Category Descriptions
Color
Green
Good
0 to 54
Air quality is satisfactory, and air
pollution poses little or no risk.
Yellow
Moderate
55 to 154
Air quality is acceptable. However,
there may be a risk for some
people, particularly those who are
unusually sensitive to air pollution.
Orange
Unhealthy for Sensitive
155 to 254
Members of sensitive groups may
Groups
experience health effects. The
general public is less likely to be
affected.
Red
Unhealthy
255 to 354
Some members of the general
public may experience health
effects; members of sensitive
groups may experience more
serious health effects.
Purple
Very Unhealthy
355 to 424
Health alert: The risk of health
effects is increased for everyone.
425 to 504
Health warning of - .-
more
conditions: everyone is likely
• be affected.
Thursday, February 8, 2024
North Hangar Fire Incident I City of Tustin
Aik quality Updates: Particulate Matter
Air monitoring and sampling locations have been set up around the perimeter of the hangar and
in surrounding communities to provide real-time information on Particulate Matter (PM) in the
air. While the units are in place, an average reading for the last 24 hours will be provided for the
public's reference. Any questions regarding these numbers should be directed to the call center
at 714-426-2444.
Monitoring Air Quality for Sensitive Individuals
The Incident Management Team Environmental Group is monitoring the air quality around the
incident for any readings above 154 micrograms per cubic meter (ug/m3), which may cause
individuals in sensitive groups to experience health effects. This is a moderate threshold that is
less likely to affect the general public.
What is Particulate Matter?
"Particulate matter," also known as particle pollution or PM, is a complex mixture of extremely
small particles and liquid droplets that exists in the environment including pollen, dust, and soil.
Typical particulate matter for the area ranges from 3 to 67 ug/m3. The concentration range is
based on sampling results collected by South Coast AQMD in Anaheim, CA, which was the
closest available dataset in proximity to the site. For more information about air quality and
monitoring, visit the AirNow website at www.airnow.gov.
Good Moderate Unhealthy for Unhealthy Very Unhealthy
(0 to 54) (55 to 154) Sensitive Groups (255 to 354) (355 to 424)
IL(155 to 254)
See below for further category descriptions.
** Data gap due to instrument malfunction.
Location
Columbus Square Park
24-Hour
Period Ending
2/8/2024 8 AM
Matter
4
Level of •
Good
Fire Station 37
2/8/2024 8 AM
4
Good
Hangar Fenceline - E Side
2/8/2024 8 AM
4
Good
Hangar Fenceline - N Center
2/8/2024 8 AM
5
Good
Hangar Fenceline - N Corner
2/8/2024 8 AM
5
Good
Hangar Fenceline - NE Corner
2/8/2024 8 AM
5
Good
Hangar Fenceline - NE Side
2/8/2024 8 AM
5
Good
Hangar Fenceline - S Corner
2/8/2024 8 AM
4
Good
Hangar Fenceline - S Side
2/8/2024 8 AM
6
Good
Hangar Fenceline - SW Corner
2/8/2024 8 AM
4
Good
Hangar Fenceline - SW Side
2/8/2024 8 AM
5
Good
Hangar Fenceline - W Side
2/8/2024 8 AM
4
Good
Heritage Elementary
2/8/2024 8 AM
5
Good
Legacy Academy
2/8/2024 8 AM
5
Good
Legacy Road
2/8/2024 8 AM
4
Good
Moffett and Tustin Ranch
2/8/2024 8 AM
7
Good
OC Animal Shelter
2/8/2024 8 AM
7
Good
Valencia and Armstrong
2/8/2024 8 AM
3
Good
Valencia and Columbus Square
2/8/2024 8 AM
3
Good
Valencia and Legacy
2/8/2024 8 AM
5
Good
Victory and Tustin Ranch Rd.
2/8/2024 8 AM
8
Good
Warner and Armstrong
2/8/2024 8 AM
2
Good
Warner Avenue
2/8/2024 8 AM
3
Good
Category Descriptions
Color
Green
Good
0 to 54
Air quality is satisfactory, and air
pollution poses little or no risk.
Yellow
Moderate
55 to 154
Air quality is acceptable. However,
there may be a risk for some
people, particularly those who are
unusually sensitive to air pollution.
Orange
Unhealthy for Sensitive
155 to 254
Members of sensitive groups may
Groups
experience health effects. The
general public is less likely to be
affected.
Red
Unhealthy
255 to 354
Some members of the general
public may experience health
effects; members of sensitive
groups may experience more
serious health effects.
Purple
Very Unhealthy
355 to 424
Health alert: The risk of health
effects is increased for everyone.
425 to 504
Health warning of - .-
more
conditions: everyone is likely
• be affected.
Friday, February 9, 2024
North Hangar Fire Incident I City of Tustin
Aik quality Updates: Particulate Matter
Air monitoring and sampling locations have been set up around the perimeter of the hangar and
in surrounding communities to provide real-time information on Particulate Matter (PM) in the
air. While the units are in place, an average reading for the last 24 hours will be provided for the
public's reference. Any questions regarding these numbers should be directed to the call center
at 714-426-2444.
Monitoring Air Quality for Sensitive Individuals
The Incident Management Team Environmental Group is monitoring the air quality around the
incident for any readings above 154 micrograms per cubic meter (ug/m3), which may cause
individuals in sensitive groups to experience health effects. This is a moderate threshold that is
less likely to affect the general public.
What is Particulate Matter?
"Particulate matter," also known as particle pollution or PM, is a complex mixture of extremely
small particles and liquid droplets that exists in the environment including pollen, dust, and soil.
Typical particulate matter for the area ranges from 3 to 67 ug/m3. The concentration range is
based on sampling results collected by South Coast AQMD in Anaheim, CA, which was the
closest available dataset in proximity to the site. For more information about air quality and
monitoring, visit the AirNow website at www.airnow.gov.
Good Moderate Unhealthy for Unhealthy Very Unhealthy
(0 to 54) (55 to 154) Sensitive Groups (255 to 354) (355 to 424)
IL(155 to 254)
See below for further category descriptions.
** Data gap due to instrument malfunction.
Location
Columbus Square Park
24-Hour
Period Ending
2/9/2024 8 AM
Matter
3
Level of •
Good
Fire Station 37
2/9/2024 8 AM
5
Good
Hangar Fenceline - E Side
2/9/2024 8 AM
3
Good
Hangar Fenceline - N Center
2/9/2024 8 AM
3
Good
Hangar Fenceline - N Corner
2/9/2024 8 AM
4
Good
Hangar Fenceline - NE Corner
2/9/2024 8 AM
4
Good
Hangar Fenceline - NE Side
2/9/2024 8 AM
3
Good
Hangar Fenceline - S Corner
2/9/2024 8 AM
2
Good
Hangar Fenceline - S Side
2/9/2024 8 AM
5
Good
Hangar Fenceline - SW Corner
2/9/2024 8 AM
3
Good
Hangar Fenceline - SW Side
2/9/2024 8 AM
4
Good
Hangar Fenceline - W Side
2/9/2024 8 AM
4
Good
Heritage Elementary
2/9/2024 8 AM
4
Good
Legacy Academy
2/9/2024 8 AM
5
Good
Legacy Road
2/9/2024 8 AM
3
Good
Moffett and Tustin Ranch
2/9/2024 8 AM
5
Good
OC Animal Shelter
2/9/2024 8 AM
5
Good
Valencia and Armstrong
2/9/2024 8 AM
3
Good
Valencia and Columbus Square
2/9/2024 8 AM
2
Good
Valencia and Legacy
2/9/2024 8 AM
4
Good
Victory and Tustin Ranch Rd.
2/9/2024 8 AM
6
Good
Warner and Armstrong
2/9/2024 8 AM
2
Good
Warner Avenue
2/9/2024 8 AM
2
Good
Category Descriptions
Color
Green
Good
0 to 54
Air quality is satisfactory, and air
pollution poses little or no risk.
Yellow
Moderate
55 to 154
Air quality is acceptable. However,
there may be a risk for some
people, particularly those who are
unusually sensitive to air pollution.
Orange
Unhealthy for Sensitive
155 to 254
Members of sensitive groups may
Groups
experience health effects. The
general public is less likely to be
affected.
Red
Unhealthy
255 to 354
Some members of the general
public may experience health
effects; members of sensitive
groups may experience more
serious health effects.
Purple
Very Unhealthy
355 to 424
Health alert: The risk of health
effects is increased for everyone.
425 to 504
Health warning of - .-
more
conditions: everyone is likely
• be affected.
Saturday, February 10, 2024
North Hangar Fire Incident I City of Tustin
Air Quality Updates: Particulate Matter
Air monitoring and sampling locations have been set up around the perimeter of the hangar and
in surrounding communities to provide real-time information on Particulate Matter (PM) in the
air. While the units are in place, an average reading for the last 24 hours will be provided for the
public's reference. Any questions regarding these numbers should be directed to the call center
at 714-426-2444.
Monitoring Air Quality for Sensitive Individuals
The Incident Management Team Environmental Group is monitoring the air quality around the
incident for any readings above 154 micrograms per cubic meter (ug/m3), which may cause
individuals in sensitive groups to experience health effects. This is a moderate threshold that is
less likely to affect the general public.
What is Particulate Matter?
"Particulate matter," also known as particle pollution or PM, is a complex mixture of extremely
small particles and liquid droplets that exists in the environment including pollen, dust, and soil.
Typical particulate matter for the area ranges from 3 to 67 ug/m3. The concentration range is
based on sampling results collected by South Coast AQMD in Anaheim, CA, which was the
closest available dataset in proximity to the site. For more information about air quality and
monitoring, visit the AirNow website at www.airnow.gov.
Good Moderate
(0 to 54) (55 to 154)
Unhealthy for Wnhealthy
Sensitive Groups (255 to Unhealthy
EL(155 to 254)354)
See below for further category descriptions.
** Data gap due to instrument malfunction.
Very Unhealthy Hazardous
(355 to 424) (425-504)
Location
Columbus Square Park
Period Ending
2/10/2024 8 AM
Matter
•
6
Level of Concern
Good
Fire Station 37
2/10/2024 8 AM
7
Good
Hangar Fenceline - E Side
2/10/2024 8 AM
9
Good
Hangar Fenceline - N Center
2/10/2024 8 AM
8
Good
Hangar Fenceline - N Corner
2/10/2024 8 AM
7
Good
Hangar Fenceline - NE Corner
2/10/2024 8 AM
8
Good
Hangar Fenceline - NE Side
2/10/2024 8 AM
7
Good
Hangar Fenceline - S Corner
2/10/2024 8 AM
6
Good
Hangar Fenceline - S Side
2/10/2024 8 AM
8
Good
Hangar Fenceline - SW Corner
2/10/2024 8 AM
7
Good
Hangar Fenceline - SW Side
2/10/2024 8 AM
10
Good
Hangar Fenceline - W Side
2/10/2024 8 AM
7
Good
Heritage Elementary
2/10/2024 8 AM
7
Good
Legacy Academy
2/10/2024 8 AM
8
Good
Legacy Road
2/10/2024 8 AM
8
Good
Moffett and Tustin Ranch
2/10/2024 2 AM
7
Good
OC Animal Shelter
2/10/2024 8 AM
8
Good
Valencia and Armstrong
2/10/2024 8AM
7
Good
Valencia and Columbus Square
2/10/2024 8 AM
5
Good
Valencia and Legacy
2/10/2024 8 AM
9
Good
Victory and Tustin Ranch Rd.
2/10/2024 8 AM
9
Good
Warner and Armstrong
2/10/2024 8 AM
4
Good
Warner Avenue
2/10/2024 8 AM
4
Good
Category Descriptions
Color
Green
Good
0 to 54
Air quality is satisfactory, and air
pollution poses little or no risk.
Yellow
Moderate
55 to 154
Air quality is acceptable. However,
there may be a risk for some
people, particularly those who are
unusually sensitive to air pollution.
Orange
Unhealthy for Sensitive
155 to 254
Members of sensitive groups may
Groups
experience health effects. The
general public is less likely to be
affected.
Red
Unhealthy
255 to 354
Some members of the general
public may experience health
effects; members of sensitive
groups may experience more
serious health effects.
Purple
Very Unhealthy
355 to 424
Health alert: The risk of health
effects is increased for everyone.
425 to 504
Health warning of - •-
more
conditions: • - is likely
• be affected.
Sunday, February 11, 2024
North Hangar Fire Incident I City of Tustin
Air Quality Updates: Particulate Matter
Air monitoring and sampling locations have been set up around the perimeter of the hangar and
in surrounding communities to provide real-time information on Particulate Matter (PM) in the
air. While the units are in place, an average reading for the last 24 hours will be provided for the
public's reference. Any questions regarding these numbers should be directed to the call center
at 714-426-2444.
Monitoring Air Quality for Sensitive Individuals
The Incident Management Team Environmental Group is monitoring the air quality around the
incident for any readings above 154 micrograms per cubic meter (ug/m3), which may cause
individuals in sensitive groups to experience health effects. This is a moderate threshold that is
less likely to affect the general public.
What is Particulate Matter?
"Particulate matter," also known as particle pollution or PM, is a complex mixture of extremely
small particles and liquid droplets that exists in the environment including pollen, dust, and soil.
Typical particulate matter for the area ranges from 3 to 67 ug/m3. The concentration range is
based on sampling results collected by South Coast AQMD in Anaheim, CA, which was the
closest available dataset in proximity to the site. For more information about air quality and
monitoring, visit the AirNow website at www.airnow.gov.
Good Moderate
(0 to 54) (55 to 154)
Unhealthy for Wnhealthy
Sensitive Groups (255 to Unhealthy
EL(155 to 254)354)
See below for further category descriptions.
** Data gap due to instrument malfunction.
Very Unhealthy Hazardous
(355 to 424) (425-504)
Location
Columbus Square Park
Period Ending
2/11/2024 8 AM
Matter
•
8
Level of Concern
Good
Fire Station 37
2/11/2024 8 AM
8
Good
Hangar Fenceline - E Side
2/11/2024 8 AM
8
Good
Hangar Fenceline - N Center
2/11/2024 8 AM
8
Good
Hangar Fenceline - N Corner
2/11/2024 8 AM
10
Good
Hangar Fenceline - NE Corner
2/11/2024 8 AM
9
Good
Hangar Fenceline - NE Side
2/11/2024 8 AM
11
Good
Hangar Fenceline - S Corner
2/11/2024 8 AM
10
Good
Hangar Fenceline - S Side
2/11/2024 8 AM
8
Good
Hangar Fenceline - SW Corner
2/11/2024 8 AM
7
Good
Hangar Fenceline - SW Side
2/11/2024 8 AM
8
Good
Hangar Fenceline - W Side
2/11/2024 8 AM
7
Good
Heritage Elementary
2/11/2024 8 AM
11
Good
Legacy Academy
2/11/2024 8 AM
8
Good
Legacy Road
2/11/2024 8 AM
10
Good
Moffett and Tustin Ranch
2/11/2024 8 AM
5
Good
OC Animal Shelter
2/11/2024 8 AM
5
Good
Valencia and Armstrong
2/11/2024 8AM
7
Good
Valencia and Columbus Square
2/11/2024 8 AM
3
Good
Valencia and Legacy
2/11/2024 8AM
9
Good
Victory and Tustin Ranch Rd.
2/11/2024 8 AM
10
Good
Warner and Armstrong
2/11/2024 8AM
9
Good
Warner Avenue
2/11/2024 8 AM
11
Good
Category Descriptions
Color
Green
Good
0 to 54
Air quality is satisfactory, and air
pollution poses little or no risk.
Yellow
Moderate
55 to 154
Air quality is acceptable. However,
there may be a risk for some
people, particularly those who are
unusually sensitive to air pollution.
Orange
Unhealthy for Sensitive
155 to 254
Members of sensitive groups may
Groups
experience health effects. The
general public is less likely to be
affected.
Red
Unhealthy
255 to 354
Some members of the general
public may experience health
effects; members of sensitive
groups may experience more
serious health effects.
Purple
Very Unhealthy
355 to 424
Health alert: The risk of health
effects is increased for everyone.
425 to 504
Health warning of - •-
more
conditions: • - is likely
• be affected.
Monday, February 12, 2024
North Hangar Fire Incident I City of Tustin
Air Quality Updates: Particulate Matter
Air monitoring and sampling locations have been set up around the perimeter of the hangar and
in surrounding communities to provide real-time information on Particulate Matter (PM) in the
air. While the units are in place, an average reading for the last 24 hours will be provided for the
public's reference. Any questions regarding these numbers should be directed to the call center
at 714-426-2444.
Monitoring Air Quality for Sensitive Individuals
The Incident Management Team Environmental Group is monitoring the air quality around the
incident for any readings above 154 micrograms per cubic meter (ug/m3), which may cause
individuals in sensitive groups to experience health effects. This is a moderate threshold that is
less likely to affect the general public.
What is Particulate Matter?
"Particulate matter," also known as particle pollution or PM, is a complex mixture of extremely
small particles and liquid droplets that exists in the environment including pollen, dust, and soil.
Typical particulate matter for the area ranges from 3 to 67 ug/m3. The concentration range is
based on sampling results collected by South Coast AQMD in Anaheim, CA, which was the
closest available dataset in proximity to the site. For more information about air quality and
monitoring, visit the AirNow website at www.airnow.gov.
Good Moderate
(0 to 54) (55 to 154)
Unhealthy for Wnhealthy
Sensitive Groups (255 to Unhealthy
EL(155 to 254)354)
See below for further category descriptions.
** Data gap due to instrument malfunction.
Very Unhealthy Hazardous
(355 to 424) (425-504)
Location
Columbus Square Park
Period Ending
2/12/2024 8 AM
Matter
•
7
Level of Concern
Good
Fire Station 37
2/12/2024 8 AM
7
Good
Hangar Fenceline - E Side
2/12/2024 8 AM
7
Good
Hangar Fenceline - N Center
2/12/2024 8 AM
8
Good
Hangar Fenceline - N Corner
2/12/2024 8 AM
11
Good
Hangar Fenceline - NE Corner
2/12/2024 8 AM
7
Good
Hangar Fenceline - NE Side
2/12/2024 8 AM
10
Good
Hangar Fenceline - S Corner
2/12/2024 8 AM
7
Good
Hangar Fenceline - S Side
2/12/2024 8 AM
5
Good
Hangar Fenceline - SW Corner
2/12/2024 8 AM
7
Good
Hangar Fenceline - SW Side
2/12/2024 8 AM
7
Good
Hangar Fenceline - W Side
2/12/2024 8 AM
5
Good
Heritage Elementary
2/12/2024 8 AM
8
Good
Legacy Academy
2/12/2024 8 AM
8
Good
Legacy Road
2/12/2024 8 AM
10
Good
Moffett and Tustin Ranch
2/12/2024 8 AM
4
Good
OC Animal Shelter
2/12/2024 8 AM
5
Good
Valencia and Armstrong
2/12/2024 8AM
7
Good
Valencia and Columbus Square
2/12/2024 8 AM
3
Good
Valencia and Legacy
2/12/2024 8 AM
8
Good
Victory and Tustin Ranch Rd.
2/12/2024 8 AM
9
Good
Warner and Armstrong
2/12/2024 8 AM
12
Good
Warner Avenue
2/12/2024 8 AM
8
Good
Category Descriptions
Color
Green
Good
0 to 54
Air quality is satisfactory, and air
pollution poses little or no risk.
Yellow
Moderate
55 to 154
Air quality is acceptable. However,
there may be a risk for some
people, particularly those who are
unusually sensitive to air pollution.
Orange
Unhealthy for Sensitive
155 to 254
Members of sensitive groups may
Groups
experience health effects. The
general public is less likely to be
affected.
Red
Unhealthy
255 to 354
Some members of the general
public may experience health
effects; members of sensitive
groups may experience more
serious health effects.
Purple
Very Unhealthy
355 to 424
Health alert: The risk of health
effects is increased for everyone.
425 to 504
Health warning of - •-
more
conditions: • - is likely
• be affected.
Tuesday, February 13, 2024
North Hangar Fire Incident I City of Tustin
Air Quality Updates: Particulate Matter
Air monitoring and sampling locations have been set up around the perimeter of the hangar and
in surrounding communities to provide real-time information on Particulate Matter (PM) in the
air. While the units are in place, an average reading for the last 24 hours will be provided for the
public's reference. Any questions regarding these numbers should be directed to the call center
at 714-426-2444.
Monitoring Air Quality for Sensitive Individuals
The Incident Management Team Environmental Group is monitoring the air quality around the
incident for any readings above 154 micrograms per cubic meter (ug/m3), which may cause
individuals in sensitive groups to experience health effects. This is a moderate threshold that is
less likely to affect the general public.
What is Particulate Matter?
"Particulate matter," also known as particle pollution or PM, is a complex mixture of extremely
small particles and liquid droplets that exists in the environment including pollen, dust, and soil.
Typical particulate matter for the area ranges from 3 to 67 ug/m3. The concentration range is
based on sampling results collected by South Coast AQMD in Anaheim, CA, which was the
closest available dataset in proximity to the site. For more information about air quality and
monitoring, visit the AirNow website at www.airnow.gov.
Good Moderate
(0 to 54) (55 to 154)
Unhealthy for Wnhealthy
Sensitive Groups (255 to Unhealthy
EL(155 to 254)354)
See below for further category descriptions.
** Data gap due to instrument malfunction.
Very Unhealthy Hazardous
(355 to 424) (425-504)
Location
Columbus Square Park
Period Ending
2/13/2024 8 AM
Matter
•
10
Level of Concern
Good
Fire Station 37
2/13/2024 8 AM
10
Good
Hangar Fenceline - E Side
2/13/2024 8 AM
9
Good
Hangar Fenceline - N Center
2/13/2024 8 AM
10
Good
Hangar Fenceline - N Corner
2/13/2024 8 AM
14
Good
Hangar Fenceline - NE Corner
2/13/2024 8 AM
9
Good
Hangar Fenceline - NE Side
2/13/2024 8 AM
8
Good
Hangar Fenceline - S Corner
2/13/2024 8 AM
8
Good
Hangar Fenceline - S Side
2/13/2024 8 AM
10
Good
Hangar Fenceline - SW Corner
2/13/2024 8 AM
9
Good
Hangar Fenceline - SW Side
2/13/2024 8 AM
9
Good
Hangar Fenceline - W Side
2/13/2024 8 AM
7
Good
Heritage Elementary
2/13/2024 8 AM
12
Good
Legacy Academy
2/13/2024 8 AM
10
Good
Legacy Road
2/13/2024 8 AM
14
Good
Moffett and Tustin Ranch
2/13/2024 8 AM
8
Good
OC Animal Shelter
2/13/2024 8 AM
7
Good
Valencia and Armstrong
2/13/2024 8AM
8
Good
Valencia and Columbus Square
2/13/2024 8 AM
5
Good
Valencia and Legacy
2/13/2024 8 AM
9
Good
Victory and Tustin Ranch Rd.
2/13/2024 8 AM
13
Good
Warner and Armstrong
2/13/2024 8 AM
9
Good
Warner Avenue
2/13/2024 8 AM
11
Good
Category Descriptions
Color
Green
Good
0 to 54
Air quality is satisfactory, and air
pollution poses little or no risk.
Yellow
Moderate
55 to 154
Air quality is acceptable. However,
there may be a risk for some
people, particularly those who are
unusually sensitive to air pollution.
Orange
Unhealthy for Sensitive
155 to 254
Members of sensitive groups may
Groups
experience health effects. The
general public is less likely to be
affected.
Red
Unhealthy
255 to 354
Some members of the general
public may experience health
effects; members of sensitive
groups may experience more
serious health effects.
Purple
Very Unhealthy
355 to 424
Health alert: The risk of health
effects is increased for everyone.
425 to 504
Health warning of - •-
more
conditions: • - is likely
• be affected.
Wednesday, February 14, 2024
North Hangar Fire Incident I City of Tustin
Air Quality Updates: Particulate Matter
Air monitoring and sampling locations have been set up around the perimeter of the hangar and
in surrounding communities to provide real-time information on Particulate Matter (PM) in the
air. While the units are in place, an average reading for the last 24 hours will be provided for the
public's reference. Any questions regarding these numbers should be directed to the call center
at 714-426-2444.
Monitoring Air Quality for Sensitive Individuals
The Incident Management Team Environmental Group is monitoring the air quality around the
incident for any readings above 154 micrograms per cubic meter (ug/m3), which may cause
individuals in sensitive groups to experience health effects. This is a moderate threshold that is
less likely to affect the general public.
What is Particulate Matter?
"Particulate matter," also known as particle pollution or PM, is a complex mixture of extremely
small particles and liquid droplets that exists in the environment including pollen, dust, and soil.
Typical particulate matter for the area ranges from 3 to 67 ug/m3. The concentration range is
based on sampling results collected by South Coast AQMD in Anaheim, CA, which was the
closest available dataset in proximity to the site. For more information about air quality and
monitoring, visit the AirNow website at www.airnow.gov.
Good Moderate
(0 to 54) (55 to 154)
Unhealthy for Wnhealthy
Sensitive Groups (255 to Unhealthy
EL(155 to 254)354)
See below for further category descriptions.
** Data gap due to instrument malfunction.
Very Unhealthy Hazardous
(355 to 424) (425-504)
Location
Columbus Square Park
Period Ending
2/14/2024 8 AM
Matter
•
8
Level of Concern
Good
Fire Station 37
2/14/2024 8 AM
10
Good
Hangar Fenceline - E Side
2/14/2024 8 AM
9
Good
Hangar Fenceline - N Center
2/14/2024 8 AM
8
Good
Hangar Fenceline - N Corner
2/14/2024 8 AM
10
Good
Hangar Fenceline - NE Corner
2/14/2024 8 AM
10
Good
Hangar Fenceline - NE Side
2/14/2024 8 AM
13
Good
Hangar Fenceline - S Corner
2/14/2024 8 AM
10
Good
Hangar Fenceline - S Side
2/14/2024 8 AM
14
Good
Hangar Fenceline - SW Corner
2/14/2024 8 AM
9
Good
Hangar Fenceline - SW Side
2/14/2024 8 AM
10
Good
Hangar Fenceline - W Side
2/14/2024 8 AM
9
Good
Heritage Elementary
2/14/2024 8 AM
9
Good
Legacy Academy
2/14/2024 8 AM
13
Good
Legacy Road
2/14/2024 8 AM
9
Good
Moffett and Tustin Ranch
2/14/2024 8 AM
3
Good
OC Animal Shelter
2/14/2024 8 AM
12
Good
Valencia and Armstrong
2/14/2024 8AM
9
Good
Valencia and Columbus Square
2/14/2024 8 AM
7
Good
Valencia and Legacy
2/14/2024 8 AM
12
Good
Victory and Tustin Ranch Rd.
2/14/2024 8 AM
13
Good
Warner and Armstrong
2/14/2024 8 AM
7
Good
Warner Avenue
2/14/2024 8 AM
6
Good
Category Descriptions
Color
Green
Good
0 to 54
Air quality is satisfactory, and air
pollution poses little or no risk.
Yellow
Moderate
55 to 154
Air quality is acceptable. However,
there may be a risk for some
people, particularly those who are
unusually sensitive to air pollution.
Orange
Unhealthy for Sensitive
155 to 254
Members of sensitive groups may
Groups
experience health effects. The
general public is less likely to be
affected.
Red
Unhealthy
255 to 354
Some members of the general
public may experience health
effects; members of sensitive
groups may experience more
serious health effects.
Purple
Very Unhealthy
355 to 424
Health alert: The risk of health
effects is increased for everyone.
425 to 504
Health warning of - •-
more
conditions: • - is likely
• be affected.
Thursday, February 15, 2024
North Hangar Fire Incident I City of Tustin
Air Quality Updates: Particulate Matter
Air monitoring and sampling locations have been set up around the perimeter of the hangar and
in surrounding communities to provide real-time information on Particulate Matter (PM) in the
air. While the units are in place, an average reading for the last 24 hours will be provided for the
public's reference. Any questions regarding these numbers should be directed to the call center
at 714-426-2444.
Monitoring Air Quality for Sensitive Individuals
The Incident Management Team Environmental Group is monitoring the air quality around the
incident for any readings above 154 micrograms per cubic meter (ug/m3), which may cause
individuals in sensitive groups to experience health effects. This is a moderate threshold that is
less likely to affect the general public.
What is Particulate Matter?
"Particulate matter," also known as particle pollution or PM, is a complex mixture of extremely
small particles and liquid droplets that exists in the environment including pollen, dust, and soil.
Typical particulate matter for the area ranges from 3 to 67 ug/m3. The concentration range is
based on sampling results collected by South Coast AQMD in Anaheim, CA, which was the
closest available dataset in proximity to the site. For more information about air quality and
monitoring, visit the AirNow website at www.airnow.gov.
Good Moderate
(0 to 54) (55 to 154)
Unhealthy for Wnhealthy
Sensitive Groups (255 to Unhealthy
EL(155 to 254)354)
See below for further category descriptions.
** Data gap due to instrument malfunction.
Very Unhealthy Hazardous
(355 to 424) (425-504)
Location
Columbus Square Park
Period Ending
2/15/2024 8 AM
Matter
•
9
Level of Concern
Good
Fire Station 37
2/15/2024 8 AM
11
Good
Hangar Fenceline - E Side
2/15/2024 8 AM
11
Good
Hangar Fenceline - N Center
2/15/2024 8 AM
10
Good
Hangar Fenceline - N Corner
2/15/2024 8 AM
11
Good
Hangar Fenceline - NE Corner
2/15/2024 8 AM
11
Good
Hangar Fenceline - NE Side
2/15/2024 8 AM
11
Good
Hangar Fenceline - S Corner
2/15/2024 8 AM
12
Good
Hangar Fenceline - S Side
2/15/2024 8 AM
16
Good
Hangar Fenceline - SW Corner
2/15/2024 8 AM
12
Good
Hangar Fenceline - SW Side
2/15/2024 8 AM
10
Good
Hangar Fenceline - W Side
2/15/2024 8 AM
10
Good
Heritage Elementary
2/15/2024 8 AM
10
Good
Legacy Academy
2/15/2024 8 AM
14
Good
Legacy Road
2/15/2024 8 AM
12
Good
Moffett and Tustin Ranch
2/15/2024 8 AM
9
Good
OC Animal Shelter
2/15/2024 8 AM
14
Good
Valencia and Armstrong
2/15/2024 8 AM
10
Good
Valencia and Columbus Square
2/15/2024 8 AM
8
Good
Valencia and Legacy
2/15/2024 8 AM
13
Good
Victory and Tustin Ranch Rd.
2/15/2024 8 AM
15
Good
Warner and Armstrong
2/15/2024 8 AM
9
Good
Warner Avenue
2/15/2024 8 AM
8
Good
Category Descriptions
Color
Green
Good
0 to 54
Air quality is satisfactory, and air
pollution poses little or no risk.
Yellow
Moderate
55 to 154
Air quality is acceptable. However,
there may be a risk for some
people, particularly those who are
unusually sensitive to air pollution.
Orange
Unhealthy for Sensitive
155 to 254
Members of sensitive groups may
Groups
experience health effects. The
general public is less likely to be
affected.
Red
Unhealthy
255 to 354
Some members of the general
public may experience health
effects; members of sensitive
groups may experience more
serious health effects.
Purple
Very Unhealthy
355 to 424
Health alert: The risk of health
effects i d for everyone.
425 to 504
Health warning of - •-
more
conditions: • - is likely
• be affected.
Friday, February 16, 2024
North Hangar Fire Incident I City of Tustin
Air Quality Updates: Particulate Matter
Air monitoring and sampling locations have been set up around the perimeter of the hangar and
in surrounding communities to provide real-time information on Particulate Matter (PM) in the
air. While the units are in place, an average reading for the last 24 hours will be provided for the
public's reference. Any questions regarding these numbers should be directed to the call center
at 714-426-2444.
Monitoring Air Quality for Sensitive Individuals
The Incident Management Team Environmental Group is monitoring the air quality around the
incident for any readings above 154 micrograms per cubic meter (ug/m3), which may cause
individuals in sensitive groups to experience health effects. This is a moderate threshold that is
less likely to affect the general public.
What is Particulate Matter?
"Particulate matter," also known as particle pollution or PM, is a complex mixture of extremely
small particles and liquid droplets that exists in the environment including pollen, dust, and soil.
Typical particulate matter for the area ranges from 3 to 67 ug/m3. The concentration range is
based on sampling results collected by South Coast AQMD in Anaheim, CA, which was the
closest available dataset in proximity to the site. For more information about air quality and
monitoring, visit the AirNow website at www.airnow.gov.
Good Moderate
(0 to 54) (55 to 154)
Unhealthy for Wnhealthy
Sensitive Groups (255 to Unhealthy
EL(155 to 254)354)
See below for further category descriptions.
** Data gap due to instrument malfunction.
Very Unhealthy Hazardous
(355 to 424) (425-504)
Location
Columbus Square Park
Period Ending
2/16/2024 8 AM
Matter
•
15
Level of Concern
Good
Fire Station 37
2/16/2024 8 AM
16
Good
Hangar Fenceline - E Side
2/16/2024 8 AM
17
Good
Hangar Fenceline - N Center
2/16/2024 8 AM
15
Good
Hangar Fenceline - N Corner
2/16/2024 8 AM
17
Good
Hangar Fenceline - NE Corner
2/16/2024 8 AM
18
Good
Hangar Fenceline - NE Side
2/16/2024 8 AM
18
Good
Hangar Fenceline - S Corner
2/16/2024 8 AM
17
Good
Hangar Fenceline - S Side
2/16/2024 8 AM
22
Good
Hangar Fenceline - SW Corner
2/16/2024 8 AM
17
Good
Hangar Fenceline - SW Side
2/16/2024 8 AM
18
Good
Hangar Fenceline - W Side
2/16/2024 8 AM
16
Good
Heritage Elementary
2/16/2024 8 AM
17
Good
Legacy Academy
2/16/2024 8 AM
22
Good
Legacy Road
2/16/2024 8 AM
18
Good
Moffett and Tustin Ranch
2/16/2024 8 AM
22
Good
OC Animal Shelter
2/16/2024 8 AM
19
Good
Valencia and Armstrong
2/16/2024 8 AM
15
Good
Valencia and Columbus Square
2/16/2024 8 AM
15
Good
Valencia and Legacy
2/16/2024 8 AM
19
Good
Victory and Tustin Ranch Rd.
2/16/2024 8 AM
20
Good
Warner and Armstrong
2/16/2024 8 AM
17
Good
Warner Avenue
2/16/2024 8 AM
15
Good
Category Descriptions
Color
Green
Good
0 to 54
Air quality is satisfactory, and air
pollution poses little or no risk.
Yellow
Moderate
55 to 154
Air quality is acceptable. However,
there may be a risk for some
people, particularly those who are
unusually sensitive to air pollution.
Orange
Unhealthy for Sensitive
155 to 254
Members of sensitive groups may
Groups
experience health effects. The
general public is less likely to be
affected.
Red
Unhealthy
255 to 354
Some members of the general
public may experience health
effects; members of sensitive
groups may experience more
serious health effects.
Purple
Very Unhealthy
355 to 424
Health alert: The risk of health
effects i d for everyone.
425 to 504
Health warning of - •-
more
conditions: • - is likely
• be affected.
Saturday, February 17, 2024
North Hangar Fire Incident I City of Tustin
Air Quality Updates: Particulate Matter
Air monitoring and sampling locations have been set up around the perimeter of the hangar and
in surrounding communities to provide real-time information on Particulate Matter (PM) in the
air. While the units are in place, an average reading for the last 24 hours will be provided for the
public's reference. Any questions regarding these numbers should be directed to the call center
at 714-426-2444.
Monitoring Air Quality for Sensitive Individuals
The Incident Management Team Environmental Group is monitoring the air quality around the
incident for any readings above 154 micrograms per cubic meter (ug/m3), which may cause
individuals in sensitive groups to experience health effects. This is a moderate threshold that is
less likely to affect the general public.
What is Particulate Matter?
"Particulate matter," also known as particle pollution or PM, is a complex mixture of extremely
small particles and liquid droplets that exists in the environment including pollen, dust, and soil.
Typical particulate matter for the area ranges from 3 to 67 ug/m3. The concentration range is
based on sampling results collected by South Coast AQMD in Anaheim, CA, which was the
closest available dataset in proximity to the site. For more information about air quality and
monitoring, visit the AirNow website at www.airnow.gov.
Good Moderate
(0 to 54) (55 to 154)
Unhealthy for Wnhealthy
Sensitive Groups (255 to Unhealthy
EL(155 to 254)354)
See below for further category descriptions.
** Data gap due to instrument malfunction.
Very Unhealthy Hazardous
(355 to 424) (425-504)
Location
Columbus Square Park
Period Ending
2/17/2024 8 AM
Matter
32
Level of Concern
Good
Fire Station 37
2/17/2024 8 AM
30
Good
Hangar Fenceline - E Side
2/17/2024 8 AM
37
Good
Hangar Fenceline - N Center
2/17/2024 8 AM
31
Good
Hangar Fenceline - N Corner
2/17/2024 8 AM
37
Good
Hangar Fenceline - NE Corner
2/17/2024 8 AM
35
Good
Hangar Fenceline - NE Side
2/17/2024 8 AM
36
Good
Hangar Fenceline - S Corner
2/17/2024 8 AM
39
Good
Hangar Fenceline - S Side
2/17/2024 8 AM
41
Good
Hangar Fenceline - SW Corner
2/17/2024 8 AM
38
Good
Hangar Fenceline - SW Side
2/17/2024 8 AM
39
Good
Hangar Fenceline - W Side
2/17/2024 8 AM
34
Good
Heritage Elementary
2/17/2024 8 AM
36
Good
Legacy Academy
2/17/2024 8 AM
45
Good
Legacy Road
2/17/2024 8 AM
37
Good
Moffett and Tustin Ranch
2/17/2024 8 AM
41
Good
OC Animal Shelter
2/17/2024 8 AM
41
Good
Valencia and Armstrong
2/17/2024 8 AM
33
Good
Valencia and Columbus Square
2/17/2024 8 AM
32
Good
Valencia and Legacy
2/17/2024 8 AM
40
Good
Victory and Tustin Ranch Rd.
2/17/2024 8 AM
41
Good
Warner and Armstrong
2/17/2024 8 AM
32
Good
Warner Avenue
2/17/2024 8 AM
29
Good
Category Descriptions
Color
Green
Good
0 to 54
Air quality is satisfactory, and air
pollution poses little or no risk.
Yellow
Moderate
55 to 154
Air quality is acceptable. However,
there may be a risk for some
people, particularly those who are
unusually sensitive to air pollution.
Orange
Unhealthy for Sensitive
155 to 254
Members of sensitive groups may
Groups
experience health effects. The
general public is less likely to be
affected.
Red
Unhealthy
255 to 354
Some members of the general
public may experience health
effects; members of sensitive
groups may experience more
serious health effects.
Purple
Very Unhealthy
355 to 424
Health alert: The risk of health
effects i d for everyone.
425 to 504
Health warning of - •-
more
conditions: • - is likely
• be affected.
Sunday, February 18, 2024
North Hangar Fire Incident I City of Tustin
Air Quality Updates: Particulate Matter
Air monitoring and sampling locations have been set up around the perimeter of the hangar and
in surrounding communities to provide real-time information on Particulate Matter (PM) in the
air. While the units are in place, an average reading for the last 24 hours will be provided for the
public's reference. Any questions regarding these numbers should be directed to the call center
at 714-426-2444.
Monitoring Air Quality for Sensitive Individuals
The Incident Management Team Environmental Group is monitoring the air quality around the
incident for any readings above 154 micrograms per cubic meter (ug/m3), which may cause
individuals in sensitive groups to experience health effects. This is a moderate threshold that is
less likely to affect the general public.
What is Particulate Matter?
"Particulate matter," also known as particle pollution or PM, is a complex mixture of extremely
small particles and liquid droplets that exists in the environment including pollen, dust, and soil.
Typical particulate matter for the area ranges from 3 to 67 ug/m3. The concentration range is
based on sampling results collected by South Coast AQMD in Anaheim, CA, which was the
closest available dataset in proximity to the site. For more information about air quality and
monitoring, visit the AirNow website at www.airnow.gov.
Good Moderate
(0 to 54) (55 to 154)
Unhealthy for Wnhealthy
Sensitive Groups (255 to Unhealthy
EL(155 to 254)354)
See below for further category descriptions.
** Data gap due to instrument malfunction.
Very Unhealthy Hazardous
(355 to 424) (425-504)
Location
Columbus Square Park
Period Ending
2/18/2024 8 AM
Matter
22
Level of Concern
Good
Fire Station 37
2/18/2024 8 AM
21
Good
Hangar Fenceline - E Side
2/18/2024 8 AM
25
Good
Hangar Fenceline - N Center
2/18/2024 8 AM
23
Good
Hangar Fenceline - N Corner
2/18/2024 8 AM
25
Good
Hangar Fenceline - NE Corner
2/18/2024 8 AM
25
Good
Hangar Fenceline - NE Side
2/18/2024 8 AM
26
Good
Hangar Fenceline - S Corner
2/18/2024 8 AM
28
Good
Hangar Fenceline - S Side
2/18/2024 8 AM
23
Good
Hangar Fenceline - SW Corner
2/18/2024 8 AM
19
Good
Hangar Fenceline - SW Side
2/18/2024 8 AM
28
Good
Hangar Fenceline - W Side
2/18/2024 8 AM
23
Good
Heritage Elementary
2/18/2024 8 AM
24
Good
Legacy Academy
2/18/2024 8 AM
28
Good
Legacy Road
2/18/2024 8 AM
25
Good
Moffett and Tustin Ranch
2/18/2024 8 AM
28
Good
OC Animal Shelter
2/18/2024 8 AM
28
Good
Valencia and Armstrong
2/18/2024 8 AM
23
Good
Valencia and Columbus Square
2/18/2024 8 AM
21
Good
Valencia and Legacy
2/18/2024 8 AM
26
Good
Victory and Tustin Ranch Rd.
2/18/2024 8 AM
27
Good
Warner and Armstrong
2/18/2024 8 AM
22
Good
Warner Avenue
2/18/2024 8 AM
20
Good
Category Descriptions
Color
Green
Good
0 to 54
Air quality is satisfactory, and air
pollution poses little or no risk.
Yellow
Moderate
55 to 154
Air quality is acceptable. However,
there may be a risk for some
people, particularly those who are
unusually sensitive to air pollution.
Orange
Unhealthy for Sensitive
155 to 254
Members of sensitive groups may
Groups
experience health effects. The
general public is less likely to be
affected.
Red
Unhealthy
255 to 354
Some members of the general
public may experience health
effects; members of sensitive
groups may experience more
serious health effects.
Purple
Very Unhealthy
355 to 424
Health alert: The risk of health
effects i d for everyone.
425 to 504
Health warning of - •-
more
conditions: • - is likely
• be affected.
Monday, February 19, 2024
North Hangar Fire Incident I City of Tustin
Air Quality Updates: Particulate Matter
Air monitoring and sampling locations have been set up around the perimeter of the hangar and
in surrounding communities to provide real-time information on Particulate Matter (PM) in the
air. While the units are in place, an average reading for the last 24 hours will be provided for the
public's reference. Any questions regarding these numbers should be directed to the call center
at 714-426-2444.
Monitoring Air Quality for Sensitive Individuals
The Incident Management Team Environmental Group is monitoring the air quality around the
incident for any readings above 154 micrograms per cubic meter (ug/m3), which may cause
individuals in sensitive groups to experience health effects. This is a moderate threshold that is
less likely to affect the general public.
What is Particulate Matter?
"Particulate matter," also known as particle pollution or PM, is a complex mixture of extremely
small particles and liquid droplets that exists in the environment including pollen, dust, and soil.
Typical particulate matter for the area ranges from 3 to 67 ug/m3. The concentration range is
based on sampling results collected by South Coast AQMD in Anaheim, CA, which was the
closest available dataset in proximity to the site. For more information about air quality and
monitoring, visit the AirNow website at www.airnow.gov.
Good Moderate
(0 to 54) (55 to 154)
Unhealthy for Wnhealthy
Sensitive Groups (255 to Unhealthy
EL(155 to 254)354)
See below for further category descriptions.
** Data gap due to instrument malfunction.
Very Unhealthy Hazardous
(355 to 424) (425-504)
Location
Columbus Square Park
Period Ending
2/19/2024 8 AM
Matter
•
4
Level of Concern
Good
Fire Station 37
2/19/2024 8 AM
7
Good
Hangar Fenceline - E Side
2/19/2024 8 AM
5
Good
Hangar Fenceline - N Center
2/19/2024 8 AM
5
Good
Hangar Fenceline - N Corner
2/19/2024 8 AM
5
Good
Hangar Fenceline - NE Corner
**
**
**
Hangar Fenceline - NE Side
2/19/2024 8 AM
5
Good
Hangar Fenceline - S Corner
2/19/2024 8 AM
5
Good
Hangar Fenceline - S Side
2/19/2024 8 AM
6
Good
Hangar Fenceline - SW Corner
2/19/2024 8 AM
4
Good
Hangar Fenceline - SW Side
2/19/2024 8 AM
5
Good
Hangar Fenceline - W Side
**
**
**
Heritage Elementary
2/19/2024 8 AM
4
Good
Legacy Academy
2/19/2024 8 AM
5
Good
Legacy Road
2/19/2024 8 AM
4
Good
Moffett and Tustin Ranch
2/19/2024 8 AM
6
Good
OC Animal Shelter
2/19/2024 8 AM
5
Good
Valencia and Armstrong
2/19/2024 8 AM
4
Good
Valencia and Columbus Square
2/19/2024 8 AM
4
Good
Valencia and Legacy
2/19/2024 8 AM
5
Good
Victory and Tustin Ranch Rd.
2/19/2024 8 AM
5
Good
Warner and Armstrong
2/19/2024 8 AM
4
Good
Warner Avenue
2/19/2024 8 AM
4
Good
Category Descriptions
Color
Green
Good
0 to 54
Air quality is satisfactory, and air
pollution poses little or no risk.
Yellow
Moderate
55 to 154
Air quality is acceptable. However,
there may be a risk for some
people, particularly those who are
unusually sensitive to air pollution.
Orange
Unhealthy for Sensitive
155 to 254
Members of sensitive groups may
Groups
experience health effects. The
general public is less likely to be
affected.
Red
Unhealthy
255 to 354
Some members of the general
public may experience health
effects; members of sensitive
groups may experience more
serious health effects.
Purple
Very Unhealthy
355 to 424
Health alert: The risk of health
effects i d for everyone.
425 to 504
Health warning of - •-
more
conditions: • - is likely
• be affected.
Tuesday, February 20, 2024
North Hangar Fire Incident I City of Tustin
Air Quality Updates: Particulate Matter
Air monitoring and sampling locations have been set up around the perimeter of the hangar and
in surrounding communities to provide real-time information on Particulate Matter (PM) in the
air. While the units are in place, an average reading for the last 24 hours will be provided for the
public's reference. Any questions regarding these numbers should be directed to the call center
at 714-426-2444.
Monitoring Air Quality for Sensitive Individuals
The Incident Management Team Environmental Group is monitoring the air quality around the
incident for any readings above 154 micrograms per cubic meter (ug/m3), which may cause
individuals in sensitive groups to experience health effects. This is a moderate threshold that is
less likely to affect the general public.
What is Particulate Matter?
"Particulate matter," also known as particle pollution or PM, is a complex mixture of extremely
small particles and liquid droplets that exists in the environment including pollen, dust, and soil.
Typical particulate matter for the area ranges from 3 to 67 ug/m3. The concentration range is
based on sampling results collected by South Coast AQMD in Anaheim, CA, which was the
closest available dataset in proximity to the site. For more information about air quality and
monitoring, visit the AirNow website at www.airnow.gov.
Good Moderate
(0 to 54) (55 to 154)
Unhealthy for Wnhealthy
Sensitive Groups (255 to Unhealthy
EL(155 to 254)354)
See below for further category descriptions.
** Data gap due to instrument malfunction.
Very Unhealthy Hazardous
(355 to 424) (425-504)
Location
Columbus Square Park
Period Ending
2/20/2024 8 AM
Matter
•
2
Level of Concern
Good
Fire Station 37
2/20/2024 8 AM
2
Good
Hangar Fenceline - E Side
2/20/2024 8 AM
3
Good
Hangar Fenceline - N Center
2/20/2024 8 AM
2
Good
Hangar Fenceline - N Corner
2/20/2024 8 AM
3
Good
Hangar Fenceline - NE Corner
2/20/2024 8 AM
3
Good
Hangar Fenceline - NE Side
2/20/2024 8 AM
3
Good
Hangar Fenceline - S Corner
2/20/2024 8 AM
3
Good
Hangar Fenceline - S Side
2/20/2024 8 AM
3
Good
Hangar Fenceline - SW Corner
2/20/2024 8 AM
3
Good
Hangar Fenceline - SW Side
2/20/2024 8 AM
3
Good
Hangar Fenceline - W Side
2/20/2024 8 AM
3
Good
Heritage Elementary
2/20/2024 8 AM
2
Good
Legacy Academy
2/20/2024 8 AM
3
Good
Legacy Road
2/20/2024 8 AM
2
Good
Moffett and Tustin Ranch
2/20/2024 8 AM
4
Good
OC Animal Shelter
2/20/2024 8 AM
4
Good
Valencia and Armstrong
2/20/2024 8AM
2
Good
Valencia and Columbus Square
2/20/2024 8 AM
2
Good
Valencia and Legacy
2/20/2024 8 AM
3
Good
Victory and Tustin Ranch Rd.
2/20/2024 8 AM
4
Good
Warner and Armstrong
2/20/2024 8 AM
2
Good
Warner Avenue
2/20/2024 8 AM
2
Good
Category Descriptions
Color
Green
Good
0 to 54
Air quality is satisfactory, and air
pollution poses little or no risk.
Yellow
Moderate
55 to 154
Air quality is acceptable. However,
there may be a risk for some
people, particularly those who are
unusually sensitive to air pollution.
Orange
Unhealthy for Sensitive
155 to 254
Members of sensitive groups may
Groups
experience health effects. The
general public is less likely to be
affected.
Red
Unhealthy
255 to 354
Some members of the general
public may experience health
effects; members of sensitive
groups may experience more
serious health effects.
Purple
Very Unhealthy
355 to 424
Health alert: The risk of health
effects is increased for everyone.
425 to 504
Health warning of - •-
more
conditions: • - is likely
• be affected.
Wednesday, February 21, 2024
North Hangar Fire Incident I City of Tustin
Air Quality Updates: Particulate Matter
Air monitoring and sampling locations have been set up around the perimeter of the hangar and
in surrounding communities to provide real-time information on Particulate Matter (PM) in the
air. While the units are in place, an average reading for the last 24 hours will be provided for the
public's reference. Any questions regarding these numbers should be directed to the call center
at 714-426-2444.
Monitoring Air Quality for Sensitive Individuals
The Incident Management Team Environmental Group is monitoring the air quality around the
incident for any readings above 154 micrograms per cubic meter (ug/m3), which may cause
individuals in sensitive groups to experience health effects. This is a moderate threshold that is
less likely to affect the general public.
What is Particulate Matter?
"Particulate matter," also known as particle pollution or PM, is a complex mixture of extremely
small particles and liquid droplets that exists in the environment including pollen, dust, and soil.
Typical particulate matter for the area ranges from 3 to 67 ug/m3. The concentration range is
based on sampling results collected by South Coast AQMD in Anaheim, CA, which was the
closest available dataset in proximity to the site. For more information about air quality and
monitoring, visit the AirNow website at www.airnow.gov.
Good Moderate
(0 to 54) (55 to 154)
Unhealthy for Wnhealthy
Sensitive Groups (255 to Unhealthy
EL(155 to 254)354)
See below for further category descriptions.
** Data gap due to instrument malfunction.
Very Unhealthy Hazardous
(355 to 424) (425-504)
Location
Columbus Square Park
Period Ending
2/21/2024 8 AM
Matter
•
3
Level of Concern
Good
Fire Station 37
2/21/2024 8 AM
3
Good
Hangar Fenceline - E Side
2/21/2024 8 AM
2
Good
Hangar Fenceline - N Center
2/21/2024 8 AM
2
Good
Hangar Fenceline - N Corner
2/21/2024 8 AM
3
Good
Hangar Fenceline - NE Corner
2/21/2024 8 AM
3
Good
Hangar Fenceline - NE Side
2/21/2024 8 AM
4
Good
Hangar Fenceline - S Corner
2/21/2024 8 AM
3
Good
Hangar Fenceline - S Side
2/21/2024 8 AM
3
Good
Hangar Fenceline - SW Corner
2/21/2024 8 AM
4
Good
Hangar Fenceline - SW Side
2/21/2024 8 AM
3
Good
Hangar Fenceline - W Side
2/21/2024 8 AM
3
Good
Heritage Elementary
2/21/2024 8 AM
3
Good
Legacy Academy
2/21/2024 8 AM
5
Good
Legacy Road
2/21/2024 8 AM
3
Good
Moffett and Tustin Ranch
2/21/2024 8 AM
5
Good
OC Animal Shelter
2/21/2024 8 AM
4
Good
Valencia and Armstrong
2/21/2024 8AM
2
Good
Valencia and Columbus Square
2/21/2024 8 AM
3
Good
Valencia and Legacy
2/21/2024 8 AM
4
Good
Victory and Tustin Ranch Rd.
2/21/2024 8 AM
5
Good
Warner and Armstrong
2/21/2024 8 AM
2
Good
Warner Avenue
2/21/2024 8AM
3
Good
Category Descriptions
Color
Green
Good
0 to 54
Air quality is satisfactory, and air
pollution poses little or no risk.
Yellow
Moderate
55 to 154
Air quality is acceptable. However,
there may be a risk for some
people, particularly those who are
unusually sensitive to air pollution.
Orange
Unhealthy for Sensitive
155 to 254
Members of sensitive groups may
Groups
experience health effects. The
general public is less likely to be
affected.
Red
Unhealthy
255 to 354
Some members of the general
public may experience health
effects; members of sensitive
groups may experience more
serious health effects.
Purple
Very Unhealthy
355 to 424
Health alert: The risk of health
effects is increased for everyone.
425 to 504
Health warning of - •-
more
conditions: • - is likely
• be affected.
Thursday, February 22, 2024
North Hangar Fire Incident I City of Tustin
Air Quality Updates: Particulate Matter
Air monitoring and sampling locations have been set up around the perimeter of the hangar and
in surrounding communities to provide real-time information on Particulate Matter (PM) in the
air. While the units are in place, an average reading for the last 24 hours will be provided for the
public's reference. Any questions regarding these numbers should be directed to the call center
at 714-426-2444.
Monitoring Air Quality for Sensitive Individuals
The Incident Management Team Environmental Group is monitoring the air quality around the
incident for any readings above 154 micrograms per cubic meter (ug/m3), which may cause
individuals in sensitive groups to experience health effects. This is a moderate threshold that is
less likely to affect the general public.
What is Particulate Matter?
"Particulate matter," also known as particle pollution or PM, is a complex mixture of extremely
small particles and liquid droplets that exists in the environment including pollen, dust, and soil.
Typical particulate matter for the area ranges from 3 to 67 ug/m3. The concentration range is
based on sampling results collected by South Coast AQMD in Anaheim, CA, which was the
closest available dataset in proximity to the site. For more information about air quality and
monitoring, visit the AirNow website at www.airnow.gov.
Good Moderate
(0 to 54) (55 to 154)
Unhealthy for Wnhealthy
Sensitive Groups (255 to Unhealthy
EL(155 to 254)354)
See below for further category descriptions.
** Data gap due to instrument malfunction.
Very Unhealthy Hazardous
(355 to 424) (425-504)
Location
Columbus Square Park
Period Ending
2/22/2024 8 AM
Matter
•
4
Level of Concern
Good
Fire Station 37
2/22/2024 8 AM
7
Good
Hangar Fenceline - E Side
2/22/2024 8 AM
5
Good
Hangar Fenceline - N Center
2/22/2024 8 AM
4
Good
Hangar Fenceline - N Corner
2/22/2024 8 AM
5
Good
Hangar Fenceline - NE Corner
2/22/2024 8 AM
6
Good
Hangar Fenceline - NE Side
2/22/2024 8 AM
6
Good
Hangar Fenceline - S Corner
2/22/2024 8 AM
5
Good
Hangar Fenceline - S Side
2/22/2024 8 AM
7
Good
Hangar Fenceline - SW Corner
2/22/2024 8 AM
5
Good
Hangar Fenceline - SW Side
2/22/2024 8 AM
8
Good
Hangar Fenceline - W Side
2/22/2024 8 AM
5
Good
Heritage Elementary
2/22/2024 8 AM
5
Good
Legacy Academy
2/22/2024 8 AM
6
Good
Legacy Road
2/22/2024 8 AM
5
Good
Moffett and Tustin Ranch
2/22/2024 8 AM
9
Good
OC Animal Shelter
2/22/2024 8 AM
6
Good
Valencia and Armstrong
2/22/2024 8 AM
4
Good
Valencia and Columbus Square
2/22/2024 8 AM
4
Good
Valencia and Legacy
2/22/20248AM
7
Good
Victory and Tustin Ranch Rd.
2/22/2024 8 AM
7
Good
Warner and Armstrong
2/22/2024 8 AM
3
Good
Warner Avenue
2/22/2024 8 AM
4
Good
Category Descriptions
Color
Green
Good
0 to 54
Air quality is satisfactory, and air
pollution poses little or no risk.
Yellow
Moderate
55 to 154
Air quality is acceptable. However,
there may be a risk for some
people, particularly those who are
unusually sensitive to air pollution.
Orange
Unhealthy for Sensitive
155 to 254
Members of sensitive groups may
Groups
experience health effects. The
general public is less likely to be
affected.
Red
Unhealthy
255 to 354
Some members of the general
public may experience health
effects; members of sensitive
groups may experience more
serious health effects.
Purple
Very Unhealthy
355 to 424
Health alert: The risk of health
effects is increased for everyone.
425 to 504
Health warning of - •-
more
conditions: • - is likely
• be affected.
Friday, February 23, 2024
North Hangar Fire Incident I City of Tustin
Air Quality Updates: Particulate Matter
Air monitoring and sampling locations have been set up around the perimeter of the hangar and
in surrounding communities to provide real-time information on Particulate Matter (PM) in the
air. While the units are in place, an average reading for the last 24 hours will be provided for the
public's reference. Any questions regarding these numbers should be directed to the call center
at 714-426-2444.
Monitoring Air Quality for Sensitive Individuals
The Incident Management Team Environmental Group is monitoring the air quality around the
incident for any readings above 154 micrograms per cubic meter (ug/m3), which may cause
individuals in sensitive groups to experience health effects. This is a moderate threshold that is
less likely to affect the general public.
What is Particulate Matter?
"Particulate matter," also known as particle pollution or PM, is a complex mixture of extremely
small particles and liquid droplets that exists in the environment including pollen, dust, and soil.
Typical particulate matter for the area ranges from 3 to 67 ug/m3. The concentration range is
based on sampling results collected by South Coast AQMD in Anaheim, CA, which was the
closest available dataset in proximity to the site. For more information about air quality and
monitoring, visit the AirNow website at www.airnow.gov.
Good Moderate
(0 to 54) (55 to 154)
Unhealthy for Wnhealthy
Sensitive Groups (255 to Unhealthy
(155 to 254)354)
* See below for further category descriptions.
** Data gap due to instrument malfunction.
Very Unhealthy
(355 to 424)
Columbus Square Park
PeriodLocation 24-Hour
Ending
2/23/2024 8 AM
Particulate
Matter
•
11
Level of Concern
Good
Fire Station 37
2/23/2024 8 AM
13
Good
Hangar Fenceline - E Side
2/23/2024 8 AM
15
Good
Hangar Fenceline - N Center
2/23/2024 8 AM
11
Good
Hangar Fenceline - N Corner
2/23/2024 8 AM
14
Good
Hangar Fenceline - NE Corner
2/23/2024 8 AM
14
Good
Hangar Fenceline - NE Side
2/23/2024 8 AM
15
Good
Hangar Fenceline - S Corner
2/23/2024 8 AM
14
Good
Hangar Fenceline - S Side
2/23/2024 8 AM
18
Good
Hangar Fenceline - SW Corner
2/23/2024 8 AM
12
Good
Hangar Fenceline - SW Side
2/23/2024 8 AM
16
Good
Hangar Fenceline - W Side
2/23/2024 8 AM
15
Good
Heritage Elementary
2/23/2024 8 AM
13
Good
Legacy Academy
2/23/2024 8 AM
18
Good
Legacy Road
2/23/2024 8 AM
14
Good
Moffett and Tustin Ranch
2/23/2024 8AM
19
Good
OC Animal Shelter
2/23/2024 8 AM
19
Good
Valencia and Armstrong
2/23/2024 8 AM
11
Good
Valencia and Columbus Square
2/23/2024 8 AM
12
Good
Valencia and Legacy
2/23/20248AM
17
Good
Victory and Tustin Ranch Rd.
2/23/2024 8 AM
18
Good
Warner and Armstrong
2/23/2024 8 AM
11
Good
Warner Avenue
2/23/2024 8 AM
11
Good
Category Descriptions
Color
Green
Good
0 to 54
Air quality is satisfactory, and air
pollution poses little or no risk.
Yellow
Moderate
55 to 154
Air quality is acceptable. However,
there may be a risk for some
people, particularly those who are
unusually sensitive to air pollution.
Orange
Unhealthy for Sensitive
155 to 254
Members of sensitive groups may
Groups
experience health effects. The
general public is less likely to be
affected.
Unhealthy
255 to 354
Some members of the general
public may experience health
effects; members of sensitive
groups may experience more
serious health effects.
Purple
Very Unhealthy
355 to 424
Health alert: The risk of health
effects is increased for everyone.
• .ns: elikely
veryone is more
• be affected.
Saturday, February 24, 2024
North Hangar Fire Incident I City of Tustin
Air Quality Updates: Particulate Matter
Air monitoring and sampling locations have been set up around the perimeter of the hangar and
in surrounding communities to provide real-time information on Particulate Matter (PM) in the
air. While the units are in place, an average reading for the last 24 hours will be provided for the
public's reference. Any questions regarding these numbers should be directed to the call center
at 714-426-2444.
Monitoring Air Quality for Sensitive Individuals
The Incident Management Team Environmental Group is monitoring the air quality around the
incident for any readings above 154 micrograms per cubic meter (ug/m3), which may cause
individuals in sensitive groups to experience health effects. This is a moderate threshold that is
less likely to affect the general public.
What is Particulate Matter?
"Particulate matter," also known as particle pollution or PM, is a complex mixture of extremely
small particles and liquid droplets that exists in the environment including pollen, dust, and soil.
Typical particulate matter for the area ranges from 3 to 67 ug/m3. The concentration range is
based on sampling results collected by South Coast AQMD in Anaheim, CA, which was the
closest available dataset in proximity to the site. For more information about air quality and
monitoring, visit the AirNow website at www.airnow.gov.
Good Moderate
(0 to 54) (55 to 154)
Unhealthy for Wnhealthy
Sensitive Groups (255 to Unhealthy
EL(155 to 254)354)
See below for further category descriptions.
** Data gap due to instrument malfunction.
Very Unhealthy Hazardous
(355 to 424) (425-504)
Location
Columbus Square Park
Period Ending
2/24/2024 8 AM
Matter
•
8
Level of Concern
Good
Fire Station 37
2/24/2024 8 AM
10
Good
Hangar Fenceline - E Side
2/24/2024 8 AM
9
Good
Hangar Fenceline - N Center
2/24/2024 8 AM
9
Good
Hangar Fenceline - N Corner
2/24/2024 8 AM
9
Good
Hangar Fenceline - NE Corner
2/24/2024 8 AM
9
Good
Hangar Fenceline - NE Side
2/24/2024 8 AM
11
Good
Hangar Fenceline - S Corner
2/24/2024 8 AM
8
Good
Hangar Fenceline - S Side
2/24/2024 8 AM
12
Good
Hangar Fenceline - SW Corner
2/24/2024 8 AM
9
Good
Hangar Fenceline - SW Side
2/24/2024 8 AM
11
Good
Hangar Fenceline - W Side
2/24/2024 8 AM
8
Good
Heritage Elementary
2/24/2024 8 AM
10
Good
Legacy Academy
2/24/2024 8 AM
13
Good
Legacy Road
2/24/2024 8 AM
8
Good
Moffett and Tustin Ranch
2/24/2024 8 AM
8
Good
OC Animal Shelter
2/24/2024 8 AM
15
Good
Valencia and Armstrong
2/24/2024 8 AM
7
Good
Valencia and Columbus Square
2/24/2024 8 AM
9
Good
Valencia and Legacy
2/24/2024 8 AM
12
Good
Victory and Tustin Ranch Rd.
2/24/2024 8 AM
11
Good
Warner and Armstrong
2/24/2024 8 AM
7
Good
Warner Avenue
2/24/2024 8 AM
6
Good
Category Descriptions
Color
Green
Good
0 to 54
Air quality is satisfactory, and air
pollution poses little or no risk.
Yellow
Moderate
55 to 154
Air quality is acceptable. However,
there may be a risk for some
people, particularly those who are
unusually sensitive to air pollution.
Orange
Unhealthy for Sensitive
155 to 254
Members of sensitive groups may
Groups
experience health effects. The
general public is less likely to be
affected.
Red
Unhealthy
255 to 354
Some members of the general
public may experience health
effects; members of sensitive
groups may experience more
serious health effects.
Purple
Very Unhealthy
355 to 424
Health alert: The risk of health
effects is increased for everyone.
425 to 504
Health warning of - •-
more
conditions: • - is likely
• be affected.
Sunday, February 25, 2024
North Hangar Fire Incident I City of Tustin
Air Quality Updates: Particulate Matter
Air monitoring and sampling locations have been set up around the perimeter of the hangar and
in surrounding communities to provide real-time information on Particulate Matter (PM) in the
air. While the units are in place, an average reading for the last 24 hours will be provided for the
public's reference. Any questions regarding these numbers should be directed to the call center
at 714-426-2444.
Monitoring Air Quality for Sensitive Individuals
The Incident Management Team Environmental Group is monitoring the air quality around the
incident for any readings above 154 micrograms per cubic meter (ug/m3), which may cause
individuals in sensitive groups to experience health effects. This is a moderate threshold that is
less likely to affect the general public.
What is Particulate Matter?
"Particulate matter," also known as particle pollution or PM, is a complex mixture of extremely
small particles and liquid droplets that exists in the environment including pollen, dust, and soil.
Typical particulate matter for the area ranges from 3 to 67 ug/m3. The concentration range is
based on sampling results collected by South Coast AQMD in Anaheim, CA, which was the
closest available dataset in proximity to the site. For more information about air quality and
monitoring, visit the AirNow website at www.airnow.gov.
Good Moderate
(0 to 54) (55 to 154)
Unhealthy for Wnhealthy
Sensitive Groups (255 to Unhealthy
EL(155 to 254)354)
See below for further category descriptions.
** Data gap due to instrument malfunction.
Very Unhealthy Hazardous
(355 to 424) (425-504)
Location
Columbus Square Park
Period Ending
2/25/2024 8 AM
Matter
•
12
Level of Concern
Good
Fire Station 37
2/25/2024 8 AM
14
Good
Hangar Fenceline - E Side
2/25/2024 8 AM
15
Good
Hangar Fenceline - N Center
2/25/2024 8 AM
14
Good
Hangar Fenceline - N Corner
2/25/2024 8 AM
15
Good
Hangar Fenceline - NE Corner
2/25/2024 8 AM
14
Good
Hangar Fenceline - NE Side
2/25/2024 8 AM
16
Good
Hangar Fenceline - S Corner
2/25/2024 8 AM
16
Good
Hangar Fenceline - S Side
2/25/2024 8 AM
20
Good
Hangar Fenceline - SW Corner
2/25/2024 8 AM
16
Good
Hangar Fenceline - SW Side
2/25/2024 8 AM
16
Good
Hangar Fenceline - W Side
2/25/2024 8 AM
15
Good
Heritage Elementary
2/25/2024 8 AM
14
Good
Legacy Academy
2/25/2024 8 AM
18
Good
Legacy Road
2/25/2024 8 AM
16
Good
Moffett and Tustin Ranch
2/25/2024 8 AM
18
Good
OC Animal Shelter
2/25/2024 8 AM
20
Good
Valencia and Armstrong
2/25/2024 8 AM
14
Good
Valencia and Columbus Square
2/25/2024 8 AM
13
Good
Valencia and Legacy
2/25/20248AM
17
Good
Victory and Tustin Ranch Rd.
2/25/2024 8 AM
18
Good
Warner and Armstrong
2/25/2024 8 AM
14
Good
Warner Avenue
2/25/2024 8 AM
12
Good
Category Descriptions
Color
Green
Good
0 to 54
Air quality is satisfactory, and air
pollution poses little or no risk.
Yellow
Moderate
55 to 154
Air quality is acceptable. However,
there may be a risk for some
people, particularly those who are
unusually sensitive to air pollution.
Orange
Unhealthy for Sensitive
155 to 254
Members of sensitive groups may
Groups
experience health effects. The
general public is less likely to be
affected.
Red
Unhealthy
255 to 354
Some members of the general
public may experience health
effects; members of sensitive
groups may experience more
serious health effects.
Purple
Very Unhealthy
355 to 424
Health alert: The risk of health
effects is increased for everyone.
425 to 504
Health warning of - •-
more
conditions: • - is likely
• be affected.
Monday, February 26, 2024
North Hangar Fire Incident I City of Tustin
Air Quality Updates: Particulate Matter
Air monitoring and sampling locations have been set up around the perimeter of the hangar and
in surrounding communities to provide real-time information on Particulate Matter (PM) in the
air. While the units are in place, an average reading for the last 24 hours will be provided for the
public's reference. Any questions regarding these numbers should be directed to the call center
at 714-426-2444.
Monitoring Air Quality for Sensitive Individuals
The Incident Management Team Environmental Group is monitoring the air quality around the
incident for any readings above 154 micrograms per cubic meter (ug/m3), which may cause
individuals in sensitive groups to experience health effects. This is a moderate threshold that is
less likely to affect the general public.
What is Particulate Matter?
"Particulate matter," also known as particle pollution or PM, is a complex mixture of extremely
small particles and liquid droplets that exists in the environment including pollen, dust, and soil.
Typical particulate matter for the area ranges from 3 to 67 ug/m3. The concentration range is
based on sampling results collected by South Coast AQMD in Anaheim, CA, which was the
closest available dataset in proximity to the site. For more information about air quality and
monitoring, visit the AirNow website at www.airnow.gov.
Good Moderate
(0 to 54) (55 to 154)
Unhealthy for Wnhealthy
Sensitive Groups (255 to Unhealthy
EL(155 to 254)354)
See below for further category descriptions.
** Data gap due to instrument malfunction.
Very Unhealthy Hazardous
(355 to 424) (425-504)
Location
Columbus Square Park
Period Ending
2/26/2024 8 AM
Matter
•
14
Level of Concern
Good
Fire Station 37
2/26/2024 8 AM
17
Good
Hangar Fenceline - E Side
2/26/2024 8 AM
18
Good
Hangar Fenceline - N Center
2/26/2024 8 AM
17
Good
Hangar Fenceline - N Corner
2/26/2024 8 AM
19
Good
Hangar Fenceline - NE Corner
2/26/2024 8 AM
18
Good
Hangar Fenceline - NE Side
2/26/2024 8 AM
20
Good
Hangar Fenceline - S Corner
2/26/2024 8 AM
20
Good
Hangar Fenceline - S Side
2/26/2024 8 AM
23
Good
Hangar Fenceline - SW Corner
2/26/2024 8 AM
19
Good
Hangar Fenceline - SW Side
2/26/2024 8 AM
19
Good
Hangar Fenceline - W Side
2/26/2024 8 AM
18
Good
Heritage Elementary
2/26/2024 8 AM
18
Good
Legacy Academy
2/26/2024 8 AM
23
Good
Legacy Road
2/26/2024 8 AM
21
Good
Moffett and Tustin Ranch
2/26/2024 8 AM
21
Good
OC Animal Shelter
2/26/2024 8 AM
25
Good
Valencia and Armstrong
2/26/2024 8AM
18
Good
Valencia and Columbus Square
2/26/2024 8 AM
15
Good
Valencia and Legacy
2/26/2024 8 AM
22
Good
Victory and Tustin Ranch Rd.
2/26/2024 8 AM
23
Good
Warner and Armstrong
2/26/2024 8 AM
17
Good
Warner Avenue
2/26/2024 8 AM
16
Good
Category Descriptions
Color
Green
Good
0 to 54
Air quality is satisfactory, and air
pollution poses little or no risk.
Yellow
Moderate
55 to 154
Air quality is acceptable. However,
there may be a risk for some
people, particularly those who are
unusually sensitive to air pollution.
Orange
Unhealthy for Sensitive
155 to 254
Members of sensitive groups may
Groups
experience health effects. The
general public is less likely to be
affected.
Red
Unhealthy
255 to 354
Some members of the general
public may experience health
effects; members of sensitive
groups may experience more
serious health effects.
Purple
Very Unhealthy
355 to 424
Health alert: The risk of health
effects is increased for everyone.
425 to 504
Health warning of - •-
more
conditions: • - is likely
• be affected.
Tuesday, February 27 2024
North Hangar Fire Incident I City of Tustin
Air Quality Updates: Particulate Matter
Air monitoring and sampling locations have been set up around the perimeter of the hangar and
in surrounding communities to provide real-time information on Particulate Matter (PM) in the
air. While the units are in place, an average reading for the last 24 hours will be provided for the
public's reference. Any questions regarding these numbers should be directed to the call center
at 714-426-2444.
Monitoring Air Quality for Sensitive Individuals
The Incident Management Team Environmental Group is monitoring the air quality around the
incident for any readings above 154 micrograms per cubic meter (ug/m3), which may cause
individuals in sensitive groups to experience health effects. This is a moderate threshold that is
less likely to affect the general public.
What is Particulate Matter?
"Particulate matter," also known as particle pollution or PM, is a complex mixture of extremely
small particles and liquid droplets that exists in the environment including pollen, dust, and soil.
Typical particulate matter for the area ranges from 3 to 67 ug/m3. The concentration range is
based on sampling results collected by South Coast AQMD in Anaheim, CA, which was the
closest available dataset in proximity to the site. For more information about air quality and
monitoring, visit the AirNow website at www.airnow.gov.
Good Moderate
(0 to 54) (55 to 154)
Unhealthy for Wnhealthy
Sensitive Groups (255 to Unhealthy
EL(155 to 254)354)
See below for further category descriptions.
** Data gap due to instrument malfunction.
Very Unhealthy Hazardous
(355 to 424) (425-504)
Location
Columbus Square Park
Period Ending
2/27/2024 8 AM
Matter
28
Level of Concern
Good
Fire Station 37
2/27/2024 8 AM
29
Good
Hangar Fenceline - E Side
2/27/2024 8 AM
35
Good
Hangar Fenceline - N Center
2/27/2024 8 AM
32
Good
Hangar Fenceline - N Corner
2/27/2024 8 AM
35
Good
Hangar Fenceline - NE Corner
2/27/2024 8 AM
34
Good
Hangar Fenceline - NE Side
2/27/2024 8 AM
36
Good
Hangar Fenceline - S Corner
2/27/2024 8 AM
34
Good
Hangar Fenceline - S Side
2/27/2024 8 AM
37
Good
Hangar Fenceline - SW Corner
2/27/2024 8 AM
34
Good
Hangar Fenceline - SW Side
2/27/2024 8 AM
36
Good
Hangar Fenceline - W Side
2/27/2024 8 AM
33
Good
Heritage Elementary
2/27/2024 8 AM
35
Good
Legacy Academy
2/27/2024 8 AM
40
Good
Legacy Road
2/27/2024 8 AM
39
Good
Moffett and Tustin Ranch
2/27/2024 8 AM
43
Good
OC Animal Shelter
2/27/2024 8 AM
45
Good
Valencia and Armstrong
2/27/2024 8AM
33
Good
Valencia and Columbus Square
2/27/2024 8 AM
28
Good
Valencia and Legacy
2/27/2024 8 AM
40
Good
Victory and Tustin Ranch Rd.
2/27/2024 8 AM
40
Good
Warner and Armstrong
2/27/2024 8 AM
33
Good
Warner Avenue
2/27/2024 8 AM
31
Good
Category Descriptions
Color
Green
Good
0 to 54
Air quality is satisfactory, and air
pollution poses little or no risk.
Yellow
Moderate
55 to 154
Air quality is acceptable. However,
there may be a risk for some
people, particularly those who are
unusually sensitive to air pollution.
Orange
Unhealthy for Sensitive
155 to 254
Members of sensitive groups may
Groups
experience health effects. The
general public is less likely to be
affected.
Red
Unhealthy
255 to 354
Some members of the general
public may experience health
effects; members of sensitive
groups may experience more
serious health effects.
Purple
Very Unhealthy
355 to 424
Health alert: The risk of health
effects is increased for everyone.
425 to 504
Health warning of - •-
more
conditions: • - is likely
• be affected.
Wednesday, February 28, 2024
North Hangar Fire Incident I City of Tustin
Air Quality Updates: Particulate Matter
Air monitoring and sampling locations have been set up around the perimeter of the hangar and
in surrounding communities to provide real-time information on Particulate Matter (PM) in the
air. While the units are in place, an average reading for the last 24 hours will be provided for the
public's reference. Any questions regarding these numbers should be directed to the call center
at 714-426-2444.
Monitoring Air Quality for Sensitive Individuals
The Incident Management Team Environmental Group is monitoring the air quality around the
incident for any readings above 154 micrograms per cubic meter (ug/m3), which may cause
individuals in sensitive groups to experience health effects. This is a moderate threshold that is
less likely to affect the general public.
What is Particulate Matter?
"Particulate matter," also known as particle pollution or PM, is a complex mixture of extremely
small particles and liquid droplets that exists in the environment including pollen, dust, and soil.
Typical particulate matter for the area ranges from 3 to 67 ug/m3. The concentration range is
based on sampling results collected by South Coast AQMD in Anaheim, CA, which was the
closest available dataset in proximity to the site. For more information about air quality and
monitoring, visit the AirNow website at www.airnow.gov.
Good Moderate
(0 to 54) (55 to 154)
Unhealthy for Wnhealthy
Sensitive Groups (255 to Unhealthy
EL(155 to 254)354)
See below for further category descriptions.
** Data gap due to instrument malfunction.
Very Unhealthy Hazardous
(355 to 424) (425-504)
Location
Columbus Square Park
Period Ending
2/28/2024 8 AM
Matter
•
8
Level of Concern
Good
Fire Station 37
2/28/2024 8 AM
10
Good
Hangar Fenceline - E Side
2/28/2024 8 AM
10
Good
Hangar Fenceline - N Center
2/28/2024 8 AM
11
Good
Hangar Fenceline - N Corner
2/28/2024 8 AM
10
Good
Hangar Fenceline - NE Corner
2/28/2024 8 AM
10
Good
Hangar Fenceline - NE Side
2/28/2024 8 AM
12
Good
Hangar Fenceline - S Corner
2/28/2024 8 AM
10
Good
Hangar Fenceline - S Side
2/28/2024 8 AM
13
Good
Hangar Fenceline - SW Corner
2/28/2024 8 AM
10
Good
Hangar Fenceline - SW Side
2/28/2024 8 AM
16
Good
Hangar Fenceline - W Side
2/28/2024 8 AM
10
Good
Heritage Elementary
2/28/2024 8 AM
10
Good
Legacy Academy
2/28/2024 8 AM
15
Good
Legacy Road
2/28/2024 8 AM
10
Good
Moffett and Tustin Ranch
2/28/2024 8 AM
14
Good
OC Animal Shelter
2/28/2024 8 AM
9
Good
Valencia and Armstrong
2/28/2024 8 AM
9
Good
Valencia and Columbus Square
2/28/2024 8 AM
7
Good
Valencia and Legacy
2/28/20248AM
13
Good
Victory and Tustin Ranch Rd.
2/28/2024 8 AM
12
Good
Warner and Armstrong
2/28/2024 8 AM
7
Good
Warner Avenue
2/28/2024 8 AM
8
Good
Category Descriptions
Color
Green
Good
0 to 54
Air quality is satisfactory, and air
pollution poses little or no risk.
Yellow
Moderate
55 to 154
Air quality is acceptable. However,
there may be a risk for some
people, particularly those who are
unusually sensitive to air pollution.
Orange
Unhealthy for Sensitive
155 to 254
Members of sensitive groups may
Groups
experience health effects. The
general public is less likely to be
affected.
Red
Unhealthy
255 to 354
Some members of the general
public may experience health
effects; members of sensitive
groups may experience more
serious health effects.
Purple
Very Unhealthy
355 to 424
Health alert: The risk of health
effects is increased for everyone.
425 to 504
Health warning of - •-
more
conditions: • - is likely
• be affected.
Thursday, February 29, 2024
North Hangar Fire Incident I City of Tustin
Air Quality Updates: Particulate Matter
Air monitoring and sampling locations have been set up around the perimeter of the hangar and
in surrounding communities to provide real-time information on Particulate Matter (PM) in the
air. While the units are in place, an average reading for the last 24 hours will be provided for the
public's reference. Any questions regarding these numbers should be directed to the call center
at 714-426-2444.
Monitoring Air Quality for Sensitive Individuals
The Incident Management Team Environmental Group is monitoring the air quality around the
incident for any readings above 154 micrograms per cubic meter (ug/m3), which may cause
individuals in sensitive groups to experience health effects. This is a moderate threshold that is
less likely to affect the general public.
What is Particulate Matter?
"Particulate matter," also known as particle pollution or PM, is a complex mixture of extremely
small particles and liquid droplets that exists in the environment including pollen, dust, and soil.
Typical particulate matter for the area ranges from 3 to 67 ug/m3. The concentration range is
based on sampling results collected by South Coast AQMD in Anaheim, CA, which was the
closest available dataset in proximity to the site. For more information about air quality and
monitoring, visit the AirNow website at www.airnow.gov.
Good Moderate
(0 to 54) (55 to 154)
Unhealthy for Wnhealthy
Sensitive Groups (255 to Unhealthy
EL(155 to 254)354)
See below for further category descriptions.
** Data gap due to instrument malfunction.
Very Unhealthy Hazardous
(355 to 424) (425-504)
Location
Columbus Square Park
Period Ending
2/29/2024 8 AM
Matter
•
16
Level of Concern
Good
Fire Station 37
2/29/2024 8 AM
19
Good
Hangar Fenceline - E Side
2/29/2024 8 AM
21
Good
Hangar Fenceline - N Center
2/29/2024 8 AM
20
Good
Hangar Fenceline - N Corner
2/29/2024 8 AM
21
Good
Hangar Fenceline - NE Corner
2/29/2024 8 AM
22
Good
Hangar Fenceline - NE Side
2/29/2024 8 AM
23
Good
Hangar Fenceline - S Corner
2/29/2024 8 AM
21
Good
Hangar Fenceline - S Side
2/29/2024 8 AM
25
Good
Hangar Fenceline - SW Corner
2/29/2024 8 AM
21
Good
Hangar Fenceline - SW Side
2/29/2024 8 AM
26
Good
Hangar Fenceline - W Side
2/29/2024 8 AM
21
Good
Heritage Elementary
2/29/2024 8 AM
21
Good
Legacy Academy
2/29/2024 8 AM
29
Good
Legacy Road
2/29/2024 8 AM
22
Good
Moffett and Tustin Ranch
2/29/2024 8 AM
30
Good
OC Animal Shelter
2/29/2024 8 AM
27
Good
Valencia and Armstrong
2/29/2024 8 AM
19
Good
Valencia and Columbus Square
2/29/2024 8 AM
17
Good
Valencia and Legacy
2/29/20248AM
25
Good
Victory and Tustin Ranch Rd.
2/29/2024 8 AM
27
Good
Warner and Armstrong
2/29/2024 8 AM
18
Good
Warner Avenue
2/29/2024 8 AM
17
Good
Category Descriptions
Color
Green
Good
0 to 54
Air quality is satisfactory, and air
pollution poses little or no risk.
Yellow
Moderate
55 to 154
Air quality is acceptable. However,
there may be a risk for some
people, particularly those who are
unusually sensitive to air pollution.
Orange
Unhealthy for Sensitive
155 to 254
Members of sensitive groups may
Groups
experience health effects. The
general public is less likely to be
affected.
Red
Unhealthy
255 to 354
Some members of the general
public may experience health
effects; members of sensitive
groups may experience more
serious health effects.
Purple
Very Unhealthy
355 to 424
Health alert: The risk of health
effects is increased for everyone.
425 to 504
Health warning of - •-
more
conditions: • - is likely
• be affected.