Pacific Southwest, Region 9
Serving: Arizona, California, Hawaii, Nevada, Pacific Islands, Tribal Nations
Air Quality Analysis
Air Quality Trends
2008 Lead (Pb) National Standard
24-Hour Fine Particulate Matter (PM2.5)
Annual Fine Particulate Matter (PM2.5)
Particulate Matter (PM10)
Air Quality Trends (1985-2018)
Particulate Matter (PM10) Estimated Exceedance Days
Three-year Average of Number of Estimated Exceedance Eays Per Year
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