The air quality forecast for Saturday, April 4, is for little change in conditions. Air quality levels will be GOOD to MODERATE throughout the day.
The air quality forecast for Sunday, April 5, is for little change in conditions. Air quality levels will be GOOD throughout the day.
The air quality forecast for Monday, April 6, is for little change in conditions. Air quality levels will be GOOD throughout the day.
The Forecasts for Sunday and Monday were issued on Friday and subject to be slightly different due to unexpected changes in meteorological conditions. Please refer to the "Current Ozone & PM2.5 Pollution Map" for up to date information.
Air quality reports use the Air Quality Index, which represents the higher of two pollutants - PM2.5 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), 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
and Pollutant
Measured Maximum AQI
and Pollutant
APRIL 4
APRIL 5
APRIL 6
APRIL 3
Alpine
46
OZONE
43
OZONE
37
OZONE
47
OZONE
Chula Vista
43
OZONE
41
OZONE
35
OZONE
44
OZONE
Del Mar
44
OZONE
42
OZONE
36
OZONE
46
OZONE
Downtown
44
OZONE
41
OZONE
37
OZONE
47
PM2.5
El Cajon
46
PM2.5
42
OZONE
37
OZONE
51
PM2.5
Escondido
46
PM2.5
42
OZONE
37
OZONE
52
PM2.5
Otay Mesa
53
PM2.5
42
PM2.5
37
OZONE
48
PM2.5
Kearny Mesa
44
OZONE
41
OZONE
35
OZONE
45
OZONE
Oceanside
44
OZONE
42
OZONE
36
OZONE
46
OZONE
POLLUTANT SPECIFIC FORECASTS
City
Forecast Maximum AQI
OZONE
APRIL 4
APRIL 5
APRIL 6
Alpine
46
GOOD
43
GOOD
37
GOOD
Chula Vista
43
GOOD
41
GOOD
35
GOOD
Del Mar
44
GOOD
42
GOOD
36
GOOD
Downtown
44
GOOD
41
GOOD
37
GOOD
El Cajon
45
GOOD
42
GOOD
37
GOOD
Escondido
45
GOOD
42
GOOD
37
GOOD
Otay Mesa
44
GOOD
41
GOOD
37
GOOD
Kearny Mesa
44
GOOD
41
GOOD
35
GOOD
Oceanside
44
GOOD
42
GOOD
36
GOOD
City
Forecast Maximum AQI
PM2.5
APRIL 4
APRIL 5
APRIL 6
Alpine
29
GOOD
21
GOOD
8
GOOD
Chula Vista
33
GOOD
29
GOOD
13
GOOD
Del Mar
38
GOOD
25
GOOD
8
GOOD
Downtown
42
GOOD
33
GOOD
13
GOOD
El Cajon
46
GOOD
38
GOOD
17
GOOD
Escondido
46
GOOD
38
GOOD
17
GOOD
Otay Mesa
53
MODERATE
42
GOOD
17
GOOD
Kearny Mesa
33
GOOD
29
GOOD
13
GOOD
Oceanside
38
GOOD
25
GOOD
8
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) 586-2600. If you have an air pollution complaint, or see an air pollution problem, please call (858) 586-2650. Thank you.
