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Air Quality Forecast

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The air quality forecast for Wednesday, July 23, is for less favorable 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

Pollutant

Measured Maximum AQI

Pollutant

WEDNESDAY, JULY 23

TUESDAY, JULY 22

Alpine

80

OZONE

51

OZONE

Chula Vista

34

OZONE

25

OZONE

Del Mar

38

OZONE

41

OZONE

Downtown

34

OZONE

28

OZONE

El Cajon

47

OZONE

36

OZONE

Escondido

47

OZONE

36

OZONE

Otay Mesa

33

PM2.5

25

OZONE

Kearny Mesa

34

OZONE

31

OZONE

Oceanside

34

OZONE

25

OZONE


POLLUTANT SPECIFIC FORECASTS

City

Forecast Maximum AQI OZONE

Forecast Maximum AQI PM2.5

WEDNESDAY, JULY 23

WEDNESDAY, JULY 23

Alpine

80

MODERATE

29

GOOD

Chula Vista

34

GOOD

29

GOOD

Del Mar

38

GOOD

29

GOOD

Downtown

34

GOOD

33

GOOD

El Cajon

47

GOOD

42

GOOD

Escondido

47

GOOD

42

GOOD

Otay Mesa

30

GOOD

33

GOOD

Kearny Mesa

34

GOOD

29

GOOD

Oceanside

34

GOOD

21

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.

BR / 1630 PDT