The air quality forecast for Monday, January 20, is for little change in conditions. Air quality levels will be GOOD to MODERATE throughout the day.
The air quality forecast for Tuesday, January 21, 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 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
MONDAY, JANUARY 20
TUESDAY, JANUARY 21
SUNDAY, JANUARY 19
Alpine
39
OZONE
37
OZONE
41
OZONE
Chula Vista
46
PM2.5
42
PM2.5
44
PM2.5
Del Mar
38
PM2.5
33
OZONE
34
PM2.5
Downtown
53
PM2.5
46
PM2.5
52
PM2.5
El Cajon
59
PM2.5
53
PM2.5
57
PM2.5
Escondido
59
PM2.5
53
PM2.5
58
PM2.5
Otay Mesa
35
OZONE
34
OZONE
43
OZONE
Kearny Mesa
46
PM2.5
42
PM2.5
44
PM2.5
Oceanside
38
PM2.5
33
OZONE
34
PM2.5
POLLUTANT SPECIFIC FORECASTS
City
Forecast Maximum AQI
OZONE
MONDAY, JANUARY 20
TUESDAY, JANUARY 21
Alpine
39
GOOD
37
GOOD
Chula Vista
35
GOOD
34
GOOD
Del Mar
32
GOOD
33
GOOD
Downtown
33
GOOD
33
GOOD
El Cajon
34
GOOD
35
GOOD
Escondido
34
GOOD
35
GOOD
Otay Mesa
35
GOOD
34
GOOD
Kearny Mesa
36
GOOD
35
GOOD
Oceanside
32
GOOD
33
GOOD
City
Forecast Maximum AQI
PM2.5
MONDAY, JANUARY 20
TUESDAY, JANUARY 21
Alpine
13
GOOD
8
GOOD
Chula Vista
46
GOOD
42
GOOD
Del Mar
38
GOOD
29
GOOD
Downtown
53
MODERATE
46
GOOD
El Cajon
59
MODERATE
53
MODERATE
Escondido
59
MODERATE
53
MODERATE
Otay Mesa
29
GOOD
29
GOOD
Kearny Mesa
46
GOOD
42
GOOD
Oceanside
38
GOOD
29
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.
