Air Quality Forecast

Font Size Extra Large Font Size Large Font Size Default

The air quality forecast for Saturday, February 25, is for little change in conditions. Air quality levels will be GOOD throughout the day.

The air quality forecast for Sunday, February 26, is for little change in conditions. Air quality levels will be GOOD throughout the day.

The air quality forecast for Monday, February 27, is for little change in conditions. Air quality levels will be GOOD throughout the day.

The Forecasts for Sunday and Monday were 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.

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

  FEBRUARY 25

FEBRUARY 26

FEBRUARY 27

FEBRUARY 24

Alpine

49

OZONE

42

OZONE

40

OZONE

47

OZONE

Chula Vista

44

OZONE

40

OZONE

37

OZONE

44

OZONE

Del Mar

46

OZONE

40

OZONE

37

OZONE

44

OZONE

Downtown

45

OZONE

40

OZONE

37

OZONE

44

OZONE

El Cajon

46

OZONE

40

OZONE

37

OZONE

44

OZONE

Escondido

46

OZONE

40

OZONE

37

OZONE

44

OZONE

Otay Mesa

50

PM2.5

42

PM2.5

38

OZONE

48

PM2.5

Kearny Mesa

47

OZONE

41

OZONE

38

OZONE

46

OZONE

Oceanside

45

OZONE

40

OZONE

37

OZONE

44

OZONE

 


POLLUTANT SPECIFIC FORECASTS

City

Forecast Maximum AQI
OZONE

  FEBRUARY 25

FEBRUARY 26

FEBRUARY 27

Alpine

49

GOOD

42

GOOD

40

GOOD

Chula Vista

44

GOOD

40

GOOD

37

GOOD

Del Mar

46

GOOD

40

GOOD

37

GOOD

Downtown

45

GOOD

40

GOOD

37

GOOD

El Cajon

46

GOOD

40

GOOD

37

GOOD

Escondido

46

GOOD

40

GOOD

37

GOOD

Otay Mesa

47

GOOD

41

GOOD

38

GOOD

Kearny Mesa

47

GOOD

41

GOOD

38

GOOD

Oceanside

45

GOOD

40

GOOD

37

GOOD

 

City

Forecast Maximum AQI
PM2.5
  FEBRUARY 25

FEBRUARY 26

FEBRUARY 27

Alpine

25

GOOD

21

GOOD

17

GOOD

Chula Vista

25

GOOD

21

GOOD

21

GOOD

Del Mar

25

GOOD

21

GOOD

21

GOOD

Downtown

29

GOOD

25

GOOD

25

GOOD

El Cajon

38

GOOD

33

GOOD

29

GOOD

Escondido

38

GOOD

33

GOOD

29

GOOD

Otay Mesa

50

GOOD

42

GOOD

33

GOOD

Kearny Mesa

25

GOOD

21

GOOD

21

GOOD

Oceanside

21

GOOD

21

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.

AC / 1630 PST