Air Quality Forecast

The air quality forecast for Wednesday, May 5 is for little change in conditions. Air quality levels will be GOOD to MODERATE throughout the day.

The air quality forecast for Thursday, May 6 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 and Pollutant

 

WEDNESDAY, MAY 5 THURSDAY, MAY 6

Alpine

100

OZONE

77

OZONE

Chula Vista

54

OZONE

46

OZONE

Del Mar

50

PM2.5

50

PM2.5

Downtown

50

OZONE

53

PM2.5

El Cajon

84

OZONE

61

OZONE

Escondido

84

OZONE

61

OZONE

Otay Mesa

61

OZONE

55

PM2.5

Kearny Mesa

67

OZONE

49

OZONE

Oceanside

50

PM2.5

50

PM2.5


POLLUTANT SPECIFIC FORECASTS

City

Forecast Maximum AQI OZONE

Forecast Maximum AQI PM2.5

 

WEDNESDAY, MAY 5 WEDNESDAY, MAY 5

Alpine

100

MODERATE

29

GOOD

Chula Vista

54

MODERATE

46

GOOD

Del Mar

43

GOOD

50

GOOD

Downtown

50

GOOD

50

GOOD

El Cajon

84

MODERATE

50

GOOD

Escondido

84

MODERATE

53

MODERATE

Otay Mesa

61

MODERATE

50

GOOD

Kearny Mesa

67

MODERATE

46

GOOD

Oceanside

43

GOOD

50

GOOD

 

City

Forecast Maximum AQI OZONE

Forecast Maximum AQI PM2.5

 

THURSDAY, MAY 6 THURSDAY, MAY 6

Alpine

77

MODERATE

25

GOOD

Chula Vista

46

GOOD

46

GOOD

Del Mar

42

GOOD

50

GOOD

Downtown

46

GOOD

53

MODERATE

El Cajon

61

MODERATE

50

GOOD

Escondido

61

MODERATE

53

MODERATE

Otay Mesa

46

GOOD

55

MODERATE

Kearny Mesa

49

GOOD

46

GOOD

Oceanside

42

GOOD

50

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.

JD