Air Quality Forecast

The air quality forecast for Tuesday, November 24 is for little change in conditions. Air quality levels will be GOOD to MODERATE throughout the day.

The air quality forecast for Wednesday, November 25 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

 

TUESDAY, NOVEMBER 24 WEDNESDAY, NOVEMBER 25

Alpine

46

OZONE

44

OZONE

Chula Vista

50

PM2.5

46

PM2.5

Del Mar

41

OZONE

42

PM2.5

Downtown

46

PM2.5

50

PM2.5

El Cajon

57

PM2.5

53

PM2.5

Escondido

57

PM2.5

53

PM2.5

Otay Mesa

61

PM2.5

55

PM2.5

Kearny Mesa

46

PM2.5

42

PM2.5

Oceanside

41

OZONE

42

PM2.5


POLLUTANT SPECIFIC FORECASTS

City

Forecast Maximum AQI OZONE

Forecast Maximum AQI PM2.5

 

TUESDAY, NOVEMBER 24 TUESDAY, NOVEMBER 24

Alpine

46

GOOD

38

GOOD

Chula Vista

41

GOOD

50

GOOD

Del Mar

41

GOOD

33

GOOD

Downtown

41

GOOD

46

GOOD

El Cajon

46

GOOD

57

MODERATE

Escondido

46

GOOD

57

MODERATE

Otay Mesa

44

GOOD

61

MODERATE

Kearny Mesa

44

GOOD

46

GOOD

Oceanside

41

GOOD

33

GOOD

 

City

Forecast Maximum AQI OZONE

Forecast Maximum AQI PM2.5

 

WEDNESDAY, NOVEMBER 25 WEDNESDAY, NOVEMBER 25

Alpine

44

GOOD

33

GOOD

Chula Vista

37

GOOD

46

GOOD

Del Mar

39

GOOD

42

GOOD

Downtown

37

GOOD

50

GOOD

El Cajon

41

GOOD

53

MODERATE

Escondido

41

GOOD

53

MODERATE

Otay Mesa

38

GOOD

55

MODERATE

Kearny Mesa

40

GOOD

42

GOOD

Oceanside

39

GOOD

42

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.

JD