The air quality forecast for Friday, March 12, is for little change in conditions. Air Quality Levels will be GOOD to MODERATE throughout the day.
Air quality reports use the Air Quality Index, which represents the higher of three pollutants - PM2.5, PM10 or ozone. For ground-level ozone (O3) , these values are based upon an 8-hour running average. For ground-level particulate matter with a diameter less than 2.5 microns (PM2.5)or less than 10 microns (PM10), these values are based upon a 24-hour daily average.
Air Quality Index
(AQI) Values
Levels of Health Concern
Colors
When the AQI
is in this range:
...air quality conditions are:
...as symbolized
by this color:
0 to 50
Good
Green
51 to 100
Moderate
Yellow
101 to 150
Unhealthy for
Sensitive Groups (U.S.G)
Orange
151 to 200
Unhealthy
Red
201 to 300
Very Unhealthy
Purple
301 to 500
Hazardous
Maroon
City
Forecast Maximum AQI
Pollutant
Measured Maximum AQI
Pollutant
FRIDAY, MARCH 12
THURSDAY, MARCH 11
Alpine
47
OZONE
44
OZONE
Chula Vista
47
OZONE
46
OZONE
Del Mar
45
OZONE
45
OZONE
Downtown
55
PM2.5
43
PM2.5
El Cajon
42
OZONE
40
OZONE
Escondido
42
OZONE
40
PM2.5
Otay Mesa
49
PM2.5
43
PM2.5
Kearny Mesa
42
OZONE
44
OZONE
Oceanside
42
OZONE
44
OZONE
POLLUTANT SPECIFIC FORECASTS
City
Forecast Maximum AQI OZONE
Forecast Maximum AQI PM2.5
FRIDAY, MARCH 12
FRIDAY, MARCH 12
Alpine
47
GOOD
26
GOOD
Chula Vista
47
GOOD
42
GOOD
Del Mar
45
GOOD
39
GOOD
Downtown
38
GOOD
55
MODERATE
El Cajon
42
GOOD
42
GOOD
Escondido
42
GOOD
42
GOOD
Otay Mesa
34
GOOD
49
GOOD
Kearny Mesa
42
GOOD
42
GOOD
Oceanside
42
GOOD
32
GOOD
In cases where this page is not updated properly, or to hear
the official air pollution forecast, please call our air pollution recording
line at (858) 586-2800. This recording is updated daily Monday through Friday at 4:30 PM.
If you need air quality information, please call (858) 586-2707. If you have an air pollution complaint, or see an air pollution problem, please call (858) 586-2650. Thank you.
