Air Quality Forecast

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The air quality forecast for Monday, January 20, is for little change in conditions. Air quality levels will be GOOD to MODERATE throughout the day.

The air quality forecast for Tuesday, January 21, is for little change in 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
and Pollutant

Measured Maximum AQI
and Pollutant

 

MONDAY, JANUARY 20

TUESDAY, JANUARY 21

SUNDAY, JANUARY 19

Alpine

39

OZONE

37

OZONE

41

OZONE

Chula Vista

46

PM2.5

42

PM2.5

44

PM2.5

Del Mar

38

PM2.5

33

OZONE

34

PM2.5

Downtown

53

PM2.5

46

PM2.5

52

PM2.5

El Cajon

59

PM2.5

53

PM2.5

57

PM2.5

Escondido

59

PM2.5

53

PM2.5

58

PM2.5

Otay Mesa

35

OZONE

34

OZONE

43

OZONE

Kearny Mesa

46

PM2.5

42

PM2.5

44

PM2.5

Oceanside

38

PM2.5

33

OZONE

34

PM2.5


POLLUTANT SPECIFIC FORECASTS

City

Forecast Maximum AQI
OZONE

 

MONDAY, JANUARY 20

TUESDAY, JANUARY 21

Alpine

39

GOOD

37

GOOD

Chula Vista

35

GOOD

34

GOOD

Del Mar

32

GOOD

33

GOOD

Downtown

33

GOOD

33

GOOD

El Cajon

34

GOOD

35

GOOD

Escondido

34

GOOD

35

GOOD

Otay Mesa

35

GOOD

34

GOOD

Kearny Mesa

36

GOOD

35

GOOD

Oceanside

32
GOOD
33

GOOD

 

City

Forecast Maximum AQI
PM2.5

 

MONDAY, JANUARY 20

TUESDAY, JANUARY 21

Alpine

13

GOOD

8

GOOD

Chula Vista

46

GOOD

42

GOOD

Del Mar

38

GOOD

29

GOOD

Downtown

53

MODERATE

46

GOOD

El Cajon

59

MODERATE

53

MODERATE

Escondido

59

MODERATE

53

MODERATE

Otay Mesa

29

GOOD

29

GOOD

Kearny Mesa

46

GOOD

42

GOOD

Oceanside

38
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.

JD / 1630 PST