The air quality forecast for Wednesday, May 16, 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
WEDNESDAY, MAY 16
TUESDAY, MAY 15
Alpine
61
OZONE
50
PM2.5
Chula Vista
45
PM2.5
41
OZONE
Del Mar
45
PM2.5
37
OZONE
Downtown
55
PM2.5
47
PM2.5
El Cajon
52
PM2.5
41
OZONE
Escondido
47
OZONE
42
OZONE
Otay Mesa
55
PM2.5
47
PM2.5
Kearny Mesa
45
PM2.5
41
OZONE
Oceanside
42
PM2.5
36
OZONE
POLLUTANT SPECIFIC FORECASTS
City
Forecast Maximum AQI OZONE
Forecast Maximum AQI PM2.5
WEDNESDAY, MAY 16
WEDNESDAY, MAY 16
Alpine
61
MODERATE
45
GOOD
Chula Vista
42
GOOD
45
GOOD
Del Mar
38
GOOD
45
GOOD
Downtown
34
GOOD
55
MODERATE
El Cajon
47
GOOD
52
MODERATE
Escondido
47
GOOD
42
GOOD
Otay Mesa
34
GOOD
55
MODERATE
Kearny Mesa
42
GOOD
45
GOOD
Oceanside
38
GOOD
42
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.
