San Diego County
Air
Pollution
Control District
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Air Quality Forecast -
AQ Forecast by Site -
About
Air Quality
Since the population and most pollution sources are concentrated in the western portion of San Diego County, the District conducts most of its air sampling at monitoring sites in the western region. Data collected from the monitoring stations is used to assess the County's air quality attainment status and to forecast air pollution levels using the Air Quality Index (AQI).
AQI Fact Sheet
Forecasts
Wildfire Information
Pollution Maps
Pollution Data
Note: All data at the links below are preliminary. The data should only be used for trend analysis and not compared to any standard.