Air Quality Forecast

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The air quality forecast for Tuesday, December 11, 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

Pollutant

Measured Maximum AQI

Pollutant

  TUESDAY, DECEMBER 11

MONDAY, DECEMBER 10

Alpine

37

OZONE

29

OZONE

Chula Vista

53

PM2.5

58

PM2.5

Del Mar

53

PM2.5

58

PM2.5

Downtown

53

PM2.5

58

PM2.5

El Cajon

63

PM2.5

71

PM2.5

Escondido

63

PM2.5

72

PM2.5

Otay Mesa

61

PM2.5

65

PM2.5

Kearny Mesa

53

PM2.5

58

PM2.5

Oceanside

53

PM2.5

58

PM2.5


POLLUTANT SPECIFIC FORECASTS

City

Forecast Maximum AQI OZONE

Forecast Maximum AQI PM2.5

TUESDAY, DECEMBER 11

TUESDAY, DECEMBER 11

Alpine

37

GOOD

21

GOOD

Chula Vista

32

GOOD

53

MODERATE

Del Mar

32

GOOD

53

MODERATE

Downtown

28

GOOD

53

MODERATE

El Cajon

32

GOOD

63

MODERATE

Escondido

32

GOOD

63

MODERATE

Otay Mesa

32

GOOD

61

MODERATE

Kearny Mesa

32

GOOD

53

MODERATE

Oceanside

32

GOOD

53

MODERATE

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.

BR / 1630 PST