San Diego County APCD Air Quality Information
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Regions:
All
Coastal
Foothills
Inland Mesa
Inland Valley
Layers:
AQI
Sites:
ALPINE
CARMEL MT RCH
CHULA VISTA
DOWNTOWN SES
EL CAJON LES
KEARNY MESA
OTAY MESA DVN
PENDLETON
SAN YSIDRO
Links:
Today's 8-Hour Ozone
Today's Daily Report
Yesterday's 8-Hour Ozone
Yesterday's Daily Report
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See tabular version of this AQI map data
10/24/2026 18:00
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Site Information
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AQI Level
Value
Good
0-50
Moderate
51-100
Unhealthy for
Sensitive Groups
101-150
Unhealthy
151-200
Very Unhealthy
201-300
Hazardous
301-500
AQI:
Good
Air quality is considered satisfactory, and air pollution poses little or no risk.
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AQI:
Moderate
Air quality is acceptable; however, for some pollutants there may be
a moderate health concern for a very small number of people who are
unusually sensitive to air pollution.
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AQI:
Unhealthy for Sensitive Groups
Although general public is not likely to be affected at this AQI range,
people with lung disease, older adults and children are at a greater risk
from exposure to ozone, whereas persons with heart and lung disease,
older adults and children are at greater risk from the presence of particles in the air.
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AQI:
Unhealthy
Everyone may begin to experience health effects;
members of sensitive groups may experience more serious health effects.
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AQI:
Very Unhealthy
Health alert: everyone may experience more serious health effects.
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AQI:
Hazardous
Health warnings of emergency conditions.
The entire population is more likely to be affected.
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42
16
36
28
37
38
41
36
52