Air Quality Forecast

The air quality forecast for Friday, June 6, is for little change in conditions. Air quality levels will be GOOD throughout the day.

The air quality forecast for Saturday, June 7, is for little change in conditions. Air quality levels will be GOOD throughout the day.

The air quality forecast for Sunday, June 8, is for less favorable conditions. Air quality levels will be GOOD to MODERATE throughout the day.

The air quality forecast for Monday, June 9, is for less favorable conditions. Air quality levels will be GOOD to MODERATE throughout the day.

The Forecast for Sunday and Monday was 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.

AQI Values

Levels of 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

 

Forecast Daily Maximum AQI

CITY

FRIDAY, JUNE 6

SATURDAY, JUNE 7

SUNDAY, JUNE 8

MONDAY, JUNE 9

Alpine

32

OZONE

45

OZONE

51

OZONE

67

OZONE

Chula Vista

31

OZONE

39

PM2.5

50

PM2.5

53

PM2.5

Del Mar

34

OZONE

39

OZONE

42

OZONE

44

OZONE

Downtown

31

OZONE

39

PM2.5

50

PM2.5

53

PM2.5

El Cajon

33

OZONE

44

OZONE

49

OZONE

54

OZONE

Escondido

33

OZONE

44

OZONE

49

OZONE

54

OZONE

Otay Mesa

39

PM2.5

44

PM2.5

55

PM2.5

60

PM2.5

Kearny Mesa

34

OZONE

42

OZONE

44

OZONE

47

OZONE

Oceanside

34

OZONE

39

OZONE

42

OZONE

44

OZONE

San Ysidro

32

OZONE

39

OZONE

44

PM2.5

56

PM2.5

 

Forecast Pollutant Specific Maximum AQI

FRIDAY, JUNE 6

CITY

OZONE

PM2.5

Alpine

32

GOOD

22

GOOD

Chula Vista

31

GOOD

28

GOOD

Del Mar

34

GOOD

28

GOOD

Downtown

31

GOOD

28

GOOD

El Cajon

33

GOOD

22

GOOD

Escondido

33

GOOD

22

GOOD

Otay Mesa

34

GOOD

39

GOOD

Kearny Mesa

34

GOOD

22

GOOD

Oceanside

34

GOOD

28

GOOD

San Ysidro

32

GOOD

28

GOOD

         

SATURDAY, JUNE 7

CITY

OZONE

PM2.5

Alpine

45

GOOD

22

GOOD

Chula Vista

38

GOOD

39

GOOD

Del Mar

39

GOOD

33

GOOD

Downtown

38

GOOD

39

GOOD

El Cajon

44

GOOD

28

GOOD

Escondido

44

GOOD

28

GOOD

Otay Mesa

43

GOOD

44

GOOD

Kearny Mesa

42

GOOD

22

GOOD

Oceanside

39

GOOD

33

GOOD

San Ysidro

39

GOOD

33

GOOD

         

SUNDAY, JUNE 8

CITY

OZONE

PM2.5

Alpine

51

MODERATE

33

GOOD

Chula Vista

41

GOOD

50

GOOD

Del Mar

42

GOOD

39

GOOD

Downtown

41

GOOD

50

GOOD

El Cajon

49

GOOD

39

GOOD

Escondido

49

GOOD

39

GOOD

Otay Mesa

45

GOOD

55

MODERATE

Kearny Mesa

44

GOOD

33

GOOD

Oceanside

42

GOOD

39

GOOD

San Ysidro

42

GOOD

44

GOOD

         

MONDAY, JUNE 9

CITY

OZONE

PM2.5

Alpine

67

MODERATE

39

GOOD

Chula Vista

43

GOOD

53

MODERATE

Del Mar

44

GOOD

44

GOOD

Downtown

43

GOOD

53

MODERATE

El Cajon

54

MODERATE

50

GOOD

Escondido

54

MODERATE

50

GOOD

Otay Mesa

48

GOOD

60

MODERATE

Kearny Mesa

47

GOOD

44

GOOD

Oceanside

44

GOOD

44

GOOD

San Ysidro

44

GOOD

56

MODERATE

         

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.