Air Quality Forecast

The air quality forecast for Thursday, December 1 is for little change in conditions. Air quality levels will be GOOD to MODERATE throughout the day.

The air quality forecast for Friday, December 2 is for little change in conditions. Air quality levels will be GOOD to MODERATE throughout the day.

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

 

THURSDAY, DECEMBER 1

FRIDAY, DECEMBER 2

Alpine

42
PM2.5
39
OZONE

Chula Vista

50
PM2.5
46
PM2.5

Del Mar

42
PM2.5
38
PM2.5

Downtown

50
PM2.5
50
PM2.5

El Cajon

50
PM2.5
46
PM2.5

Escondido

53
PM2.5
50
PM2.5

Otay Mesa

63
PM2.5
59
PM2.5

Kearny Mesa

46
PM2.5
42
PM2.5

Oceanside

42
PM2.5
38
OZONE


POLLUTANT SPECIFIC FORECASTS

City

Forecast Maximum AQI OZONE

Forecast Maximum AQI PM2.5

 

THURSDAY, DECEMBER 1 THURSDAY, DECEMBER 1

Alpine

36

GOOD

42

GOOD

Chula Vista

35

GOOD

50

GOOD

Del Mar

36

GOOD

42

GOOD

Downtown

34

GOOD

50

GOOD

El Cajon

33

GOOD

50

GOOD

Escondido

33

GOOD

53

MODERATE

Otay Mesa

35

GOOD

63

MODERATE

Kearny Mesa

34

GOOD

46

GOOD

Oceanside

37

GOOD

42

GOOD

 

City

Forecast Maximum AQI OZONE

Forecast Maximum AQI PM2.5

 

FRIDAY, DECEMBER 2 FRIDAY, DECEMBER 2

Alpine

39

GOOD

38

GOOD

Chula Vista

38

GOOD

46

GOOD

Del Mar

37

GOOD

38

GOOD

Downtown

36

GOOD

50

GOOD

El Cajon

36

GOOD
46

GOOD

Escondido

36

GOOD

50

GOOD

Otay Mesa

36

GOOD

59

MODERATE

Kearny Mesa

37

GOOD

42

GOOD

Oceanside

38

GOOD

38

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.