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Air Quality Data

Daily Air Quality Status and Forecast
Observed data is preliminary and subject to change
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This page is updated daily at 4:30pm.


Forecast for 7/3/2009




School Air-Quality Flags
The colors on the map correspond to the color of the school flag for your county.

More Information
  • If you are interested in more information about the Air Quality Index, click here.

  • Air Quality Index cautionary statements for ozone can be found here.

  • Air Quality Index cautionary statements for particulate matter can be found here.
  • County Observed:
    7/1/2009
    Updated Forecast for:
    7/2/2009
    Forecast for:
    7/3/2009
    San Joaquin 80 Moderate (O3) 90 Moderate (O3) 87 Moderate (O3)
    Stanislaus 111 Unhealthy for Sensitive Groups (O3) 97 Moderate (O3) 100 Moderate (O3)
    Merced 104 Unhealthy for Sensitive Groups (O3) 100 Moderate (O3) 101 Unhealthy for Sensitive Groups (O3)
    Madera 97 Moderate (O3) 90 Moderate (O3) 97 Moderate (O3)
    Fresno 132 Unhealthy for Sensitive Groups (O3) 104 Unhealthy for Sensitive Groups (O3) 106 Unhealthy for Sensitive Groups (O3)
    Kings 101 Unhealthy for Sensitive Groups (O3) 101 Unhealthy for Sensitive Groups (O3) 104 Unhealthy for Sensitive Groups (O3)
    Tulare 140 Unhealthy for Sensitive Groups (O3) 119 Unhealthy for Sensitive Groups (O3) 124 Unhealthy for Sensitive Groups (O3)
    Kern (SJV Air Basin portion) 166 Unhealthy (O3) 159 Unhealthy (O3) 161 Unhealthy (O3)
    NA—insufficient data to calculate an AQI.