Air Quality Forecast

The air quality forecast for Friday, March 1,, is for more favorable conditions. Air quality levels will be GOOD throughout the day.

The air quality forecast for Saturday, March 2, is for little change in conditions. Air quality levels will be GOOD throughout the day.

The air quality forecast for Sunday, March 3, is for little change in conditions. Air quality levels will be GOOD throughout the day.

The air quality forecast for Monday, March 4, is for little change in conditions. Air quality levels will be GOOD throughout the day.

The Forecast for Sunday and Monday was issued on Friday and subject to be slightly different due to unexpected changes in meteorological conditions.

Please refer to the "Current Ozone & PM2.5 Pollution Map" for up to date information.

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.

AQI Values

Levels of 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

Forecast Daily Maximum AQI

CITY

FRIDAY, MARCH 1

SATURDAY, MARCH 2

SUNDAY, MARCH 3

MONDAY, MARCH 4

Alpine

41

OZONE

37

OZONE

41

OZONE

44

OZONE

Chula Vista

39

OZONE

35

OZONE

37

OZONE

39

OZONE

Del Mar

38

OZONE

34

OZONE

38

OZONE

41

OZONE

Downtown

38

OZONE

32

OZONE

37

OZONE

39

OZONE

El Cajon

41

OZONE

37

OZONE

39

OZONE

42

OZONE

Escondido

41

OZONE

37

OZONE

39

OZONE

42

OZONE

Otay Mesa

39

OZONE

37

OZONE

39

OZONE

41

OZONE

Kearny Mesa

40

OZONE

37

OZONE

39

OZONE

41

OZONE

Oceanside

38

OZONE

34

OZONE

38

OZONE

41

OZONE






Forecast Pollutant Specific Maximum AQI

FRIDAY, MARCH 1

CITY

OZONE

PM2.5

Alpine

41

GOOD

21

GOOD

Chula Vista

39

GOOD

21

GOOD

Del Mar

38

GOOD

21

GOOD

Downtown

38

GOOD

21

GOOD

El Cajon

41

GOOD

21

GOOD

Escondido

41

GOOD

21

GOOD

Otay Mesa

39

GOOD

25

GOOD

Kearny Mesa

40

GOOD

21

GOOD

Oceanside

38

GOOD

21

GOOD

SATURDAY, MARCH 2

CITY

OZONE

PM2.5

Alpine

37

GOOD

17

GOOD

Chula Vista

35

GOOD

17

GOOD

Del Mar

34

GOOD

17

GOOD

Downtown

32

GOOD

17

GOOD

El Cajon

37

GOOD

17

GOOD

Escondido

37

GOOD

17

GOOD

Otay Mesa

37

GOOD

21

GOOD

Kearny Mesa

37

GOOD

17

GOOD

Oceanside

34

GOOD

17

GOOD

SUNDAY, MARCH 3

CITY

OZONE

PM2.5

Alpine

41

GOOD

13

GOOD

Chula Vista

37

GOOD

17

GOOD

Del Mar

38

GOOD

17

GOOD

Downtown

37

GOOD

17

GOOD

El Cajon

39

GOOD

17

GOOD

Escondido

39

GOOD

17

GOOD

Otay Mesa

39

GOOD

25

GOOD

Kearny Mesa

39

GOOD

17

GOOD

Oceanside

38

GOOD

17

GOOD

MONDAY, MARCH 4

CITY

OZONE

PM2.5

Alpine

44

GOOD

17

GOOD

Chula Vista

39

GOOD

25

GOOD

Del Mar

41

GOOD

25

GOOD

Downtown

39

GOOD

25

GOOD

El Cajon

42

GOOD

25

GOOD

Escondido

42

GOOD

25

GOOD

Otay Mesa

41

GOOD

33

GOOD

Kearny Mesa

41

GOOD

25

GOOD

Oceanside

41

GOOD

25

GOOD

In cases where this page is not updated properly, or to hear the air pollution forecast, please call our air pollution recording line at (858) 586-2800. 

If you need air quality information, please call (858) 586-2769. If you have an air pollution complaint, or see an air pollution problem, please call (858) 586-2650. Thank you.