Air Quality Forecast

The air quality forecast for Monday, November 30 is for little change in conditions. Air quality levels will be GOOD to MODERATE throughout the day.

The air quality forecast for Tuesday, December 1 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 a 50

Good

Green

51 a 100

Moderate

Yellow

101 a 150

Unhealthy for Sensitive Groups (U.S.G.)

Orange

151 a 200

Unhealthy

Red

201 a 300

Very Unhealthy

Purple

301 a 500

Hazardous

Maroon

 

City

Forecast Maximum AQI and Pollutant

 

MONDAY, NOVEMBER 30 TUESDAY, DECEMBER 1

Alpine

48

OZONE

44

OZONE

Chula Vista

42

PM2.5

42

PM2.5

Del Mar

40

OZONE

39

OZONE

Downtown

50

PM2.5

46

PM2.5

El Cajon

55

PM2.5

66

PM2.5

Escondido

55

PM2.5

66

PM2.5

Otay Mesa

57

PM2.5

61

PM2.5

Kearny Mesa

44

OZONE

50

PM2.5

Oceanside

40

OZONE

39

OZONE


POLLUTANT SPECIFIC FORECASTS

City

Forecast Maximum AQI OZONE

Forecast Maximum AQI PM2.5

 

MONDAY, NOVEMBER 30 MONDAY, NOVEMBER 30

Alpine

48

GOOD

25

GOOD

Chula Vista

41

GOOD

42

GOOD

Del Mar

40

GOOD

33

GOOD

Downtown

42

GOOD

50

GOOD

El Cajon

48

GOOD

55

MODERATE

Escondido

48

GOOD

55

MODERATE

Otay Mesa

43

GOOD

57

MODERATE

Kearny Mesa

44

GOOD

38

GOOD

Oceanside

40

GOOD

33

GOOD

 

City

Forecast Maximum AQI OZONE

Forecast Maximum AQI PM2.5

 

TUESDAY, DECEMBER 1 TUESDAY, DECEMBER 1

Alpine

44

GOOD

13

GOOD

Chula Vista

39

GOOD

42

GOOD

Del Mar

39

GOOD

33

GOOD

Downtown

37

GOOD

46

GOOD

El Cajon

42

GOOD

66

MODERATE

Escondido

42

GOOD

66

MODERATE

Otay Mesa

41

GOOD

61

MODERATE

Kearny Mesa

39

GOOD

50

GOOD

Oceanside

39

GOOD

33

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) 586-2600. If you have an air pollution complaint, or see an air pollution problem, please call (858) 586-2650. Thank you.

BR