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Air Quality Forecast

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The air quality forecast for Tuesday, November 25, is for little change in conditions.  Air Quality Levels will be GOOD 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

TUESDAY, NOVEMBER 25

MONDAY, NOVEMBER 24

Alpine

42

OZONE

40

OZONE

Chula Vista

35

OZONE

34

PM2.5

Del Mar

33

PM2.5

33

PM2.5

Downtown

38

PM2.5

38

PM2.5

El Cajon

38

PM2.5

42

PM2.5

Escondido

38

PM2.5

42

PM2.5

Otay Mesa

38

PM2.5

38

PM2.5

Kearny Mesa

38

PM2.5

35

PM2.5

Oceanside

31

OZONE

29

PM2.5


POLLUTANT SPECIFIC FORECASTS

City

Forecast Maximum AQI OZONE

Forecast Maximum AQI PM2.5

TUESDAY, NOVEMBER 25 MONDAY, NOVEMBER 24

Alpine

42

GOOD

21

GOOD

Chula Vista

35

GOOD

33

GOOD

Del Mar

32

GOOD

33

GOOD

Downtown

31

GOOD

38

GOOD

El Cajon

32

GOOD

38

GOOD

Escondido

35

GOOD

38

GOOD

Otay Mesa

36

GOOD

38

GOOD

Kearny Mesa

35

GOOD

38

GOOD

Oceanside

31

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.

RD / 1630