Air Quality Forecast

The air quality forecast for Friday, March 31 is for little change in conditions. Air quality levels will be GOOD throughout the day.

The air quality forecast for Saturday, April 1 is for less favorable conditions. Air quality levels will be GOOD to MODERATE throughout the day.

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

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

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

 

MARCH 31

APRIL 1

APRIL 2

APRIL 3

Alpine

49
OZONE
54
OZONE
64
OZONE
45
OZONE

Chula Vista

47
OZONE
48
OZONE
48
OZONE
44
OZONE

Del Mar

46
OZONE
47
OZONE
47
OZONE
44
OZONE

Downtown

44
OZONE
44
OZONE
46
OZONE
42
OZONE

El Cajon

45
OZONE
46
OZONE
47
OZONE
44
OZONE

Escondido

44
OZONE
46
OZONE
47
OZONE
44
OZONE

Otay Mesa

44
OZONE
53
PM2.5
55
PM2.5
43
OZONE

Kearny Mesa

44
OZONE
45
OZONE
46
OZONE
43
OZONE

Oceanside

46
OZONE
47
OZONE
47
OZONE
44
OZONE



POLLUTANT SPECIFIC FORECASTS

City

Forecast Maximum AQI OZONE

Forecast Maximum AQI PM2.5

 

FRIDAY, MARCH 31 FRIDAY, MARCH 31

Alpine

49

GOOD

17

GOOD

Chula Vista

47

GOOD

29

GOOD

Del Mar

46

GOOD

17

GOOD

Downtown

44

GOOD

38

GOOD

El Cajon

45

GOOD

25

GOOD

Escondido

45

GOOD

25

GOOD

Otay Mesa

44

GOOD

42

GOOD

Kearny Mesa

44

GOOD

29

GOOD

Oceanside

46

GOOD

17

GOOD

 

 

City

Forecast Maximum AQI OZONE

Forecast Maximum AQI PM2.5

 

SATURDAY, APRIL 1 SATURDAY, APRIL 1

Alpine

54

MODERATE

21
GOOD

Chula Vista

48

GOOD

33
GOOD

Del Mar

47

GOOD

25

GOOD

Downtown

44

GOOD

42
GOOD

El Cajon

46

GOOD
29
GOOD

Escondido

46

GOOD
29
GOOD

Otay Mesa

45

GOOD
53
MODERATE

Kearny Mesa

45

GOOD

33

GOOD

Oceanside

47

GOOD

25

GOOD

 

City

Forecast Maximum AQI OZONE

Forecast Maximum AQI PM2.5

 

SUNDAY, APRIL 2 SUNDAY, APRIL 2

Alpine

64

MODERATE

21
GOOD

Chula Vista

48

GOOD

38
GOOD

Del Mar

47

GOOD

29

GOOD

Downtown

45

GOOD

46
GOOD

El Cajon

47

GOOD
38
GOOD

Escondido

47

GOOD
38
GOOD

Otay Mesa

46

GOOD
55
MODERATE

Kearny Mesa

46

GOOD

38

GOOD

Oceanside

47

GOOD

29

GOOD

 

City

Forecast Maximum AQI OZONE

Forecast Maximum AQI PM2.5

 

MONDAY, APRIL 3 MONDAY, APRIL 3

Alpine

45

GOOD

13
GOOD

Chula Vista

44

GOOD

25
GOOD

Del Mar

44

GOOD

17

GOOD

Downtown

42

GOOD

29
GOOD

El Cajon

44

GOOD
21
GOOD

Escondido

44

GOOD
21
GOOD

Otay Mesa

43

GOOD
38
GOOD

Kearny Mesa

43

GOOD

25

GOOD

Oceanside

44

GOOD

17

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) 586-2769. If you have an air pollution complaint, or see an air pollution problem, please call (858) 586-2650. Thank you.