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Air Quality Forecast

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The air quality forecast for Saturday, November 1, is for more favorable conditions. Air quality levels will be GOOD throughout the day.

The air quality forecast for, Sunday, November 2, is for little change in conditions. Air quality levels will be GOOD throughout the day.

The air quality forecast for Monday, November 3, is for little change in conditions. Air quality levels will be GOOD throughout the day.

Forecasts for Sunday and Monday are issued on Friday and subject to be slightly different due to unexpected changes in meteorological conditions. 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

Measured Maximum AQI
and Pollutant

  NOVEMBER 1

NOVEMBER 2

NOVEMBER 3

OCTOBER 31

Alpine

42

OZONE

42

OZONE

42

OZONE

56

PM2.5

Chula Vista

38

OZONE

38

OZONE

38

OZONE

36

OZONE

Del Mar

34

OZONE

34

OZONE

34

OZONE

34

OZONE

Downtown

38

PM2.5

38

PM2.5

38

PM2.5

31

PM2.5

El Cajon

50

PM2.5

50

PM2.5

50

PM2.5

61

PM2.5

Escondido

50

PM2.5

50

PM2.5

50

PM2.5

61

PM2.5

Otay Mesa

38

PM2.5

38

PM2.5

38

PM2.5

34

OZONE

Kearny Mesa

34

OZONE

34

OZONE

34

OZONE

35

OZONE

Oceanside

38

PM2.5

38

PM2.5

38

PM2.5

33

PM2.5


POLLUTANT SPECIFIC FORECASTS

City

Forecast Maximum AQI
OZONE

  NOVEMBER 1

NOVEMBER 2

NOVEMBER 3

Alpine

42

GOOD

42

GOOD

42

GOOD

Chula Vista

38

GOOD

38

GOOD

38

GOOD

Del Mar

34

GOOD

34

GOOD

34

GOOD

Downtown

34

GOOD

34

GOOD

34

GOOD

El Cajon

38

GOOD

38

GOOD

38

GOOD

Escondido

38

GOOD

38

GOOD

38

GOOD

Otay Mesa

34

GOOD

34

GOOD

34

GOOD

Kearny Mesa

34

GOOD

34

GOOD

34

GOOD

Oceanside

34

GOOD

34

GOOD

34

GOOD

 

City

Forecast Maximum AQI
PM2.5
  NOVEMBER 1

NOVEMBER 2

NOVEMBER 3

Alpine

38

GOOD

38

GOOD

38

GOOD

Chula Vista

33

GOOD

33

GOOD

33

GOOD

Del Mar

33

GOOD

33

GOOD

33

GOOD

Downtown

38

GOOD

38

GOOD

38

GOOD

El Cajon

50

GOOD

50

GOOD

50

GOOD

Escondido

50

GOOD

50

GOOD

50

GOOD

Otay Mesa

38

GOOD

38

GOOD

38

GOOD

Kearny Mesa

33

GOOD

33

GOOD

33

GOOD

Oceanside

38

GOOD

38

GOOD

38

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.

BR / 1630