Air Quality Forecast

The air quality forecast for Thursday, June 17 is for little change in conditions. Air quality levels will be GOOD to UNHEALTHY FOR SENSITIVE GROUPS throughout the day.

The air quality forecast for Friday, June 18 is for less favorable conditions. Air quality levels will be GOOD to UNHEALTHY FOR SENSITIVE GROUPS 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

 

 THURSDAY, JUNE 17 FRIDAY, JUNE 18

Alpine

104

OZONE

132

OZONE

Chula Vista

42

PM2.5

42

PM2.5

Del Mar

46

PM2.5

46

PM2.5

Downtown

50

PM2.5

50

PM2.5

El Cajon

54

OZONE

67

OZONE

Escondido

54

OZONE

67

OZONE

Otay Mesa

61

PM2.5

61

PM2.5

Kearny Mesa

46

OZONE

46

OZONE

Oceanside

46

PM2.5

46

PM2.5


POLLUTANT SPECIFIC FORECASTS

City

Forecast Maximum AQI OZONE

Forecast Maximum AQI PM2.5

 

 THURSDAY, JUNE 17 THURSDAY, JUNE 17

Alpine

104

U.S.G.

 33

GOOD

Chula Vista

36

GOOD

42

GOOD

Del Mar

34

GOOD

46

GOOD

Downtown

34

GOOD

50

GOOD

El Cajon

54

MODERATE

50

GOOD

Escondido

54

MODERATE

50

GOOD

Otay Mesa

46

GOOD

61

MODERATE

Kearny Mesa

46

GOOD

38

GOOD

Oceanside

33

GOOD

46

GOOD

 

City

Forecast Maximum AQI OZONE

Forecast Maximum AQI PM2.5

 

 FRIDAY, JUNE 18 FRIDAY, JUNE 18

Alpine

132

U.S.G.

 38

GOOD

Chula Vista

37

GOOD

42

GOOD

Del Mar

37

GOOD

46

GOOD

Downtown

37

GOOD

50

GOOD

El Cajon

67

MODERATE

50

GOOD

Escondido

67

MODERATE

50

GOOD

Otay Mesa

46

GOOD

61

MODERATE

Kearny Mesa

46

GOOD

38

GOOD

Oceanside

37

GOOD

46

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.

BR