Air Quality Forecast

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The air quality forecast for Monday, May 29, is for little change in conditions. Air quality levels will be GOOD throughout the day.

The air quality forecast for Tuesday, May 30, 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
and Pollutant

Measured Maximum AQI
and Pollutant

 

MONDAY, MAY 29

TUESDAY, MAY 30

SUNDAY, MAY 28

Alpine

44

OZONE

43

OZONE

46

OZONE

Chula Vista

35

OZONE

32

OZONE

36

OZONE

Del Mar

40

OZONE

37

OZONE

40

OZONE

Downtown

35

OZONE

32

OZONE

36

OZONE

El Cajon

42

OZONE

39

OZONE

44

OZONE

Escondido

42

OZONE

39

OZONE

44

OZONE

Otay Mesa

40

OZONE

37

OZONE

41

OZONE

Kearny Mesa

40

OZONE

37

OZONE

42

OZONE

Oceanside

40

OZONE

37

OZONE

40

OZONE


POLLUTANT SPECIFIC FORECASTS

City

Forecast Maximum AQI
OZONE

 

MONDAY, MAY 29

TUESDAY, MAY 30

Alpine

44

GOOD

43

GOOD

Chula Vista

35

GOOD

32

GOOD

Del Mar

40

GOOD

37

GOOD

Downtown

35

GOOD

32

GOOD

El Cajon

42

GOOD

39

GOOD

Escondido

42

GOOD

39

GOOD

Otay Mesa

40

GOOD

37

GOOD

Kearny Mesa

40

GOOD

37

GOOD

Oceanside

40
GOOD
37

GOOD

 

City

Forecast Maximum AQI
PM2.5

 

MONDAY, MAY 29

TUESDAY, MAY 30

Alpine

21

GOOD

25

GOOD

Chula Vista

17

GOOD

13

GOOD

Del Mar

17

GOOD

13

GOOD

Downtown

17

GOOD

13

GOOD

El Cajon

17

GOOD

13

GOOD

Escondido

17

GOOD

13

GOOD

Otay Mesa

17

GOOD

13

GOOD

Kearny Mesa

17

GOOD

13

GOOD

Oceanside

17
GOOD
13

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.

AC / 1630 PST