PM2.5 Exceedance
PM2.5 Daily Exceedance Reports
The PM2.5 daily exceedance report is generated when an AirNow monitor detects levels above 35 mg/m³, analyzing data and tracking nearby fires to assess potential neighborhood impacts.
PM2.5 Report (2026-05-07)
PM2.5 Exceedance Summary Tables
The PM2.5 exceedance data is summarized into tables and histograms by year, month, and day.
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PM2.5 Design Value Estimator
A tool that calculates the estimated design value using AirNow data with a user-selected PM2.5 threshold.
Explore MoreOzone Exceedance
Ozone Daily Exceedance Reports
The ozone daily exceedance report is generated when an AirNow monitor records an 8-hour maximum ozone level above 70 PPB. It includes data analysis and tracks nearby fires to assess potential impacts on surrounding neighborhoods.
Ozone Report (2026-05-07)
Ozone Exceedance Summary Tables
The ozone exceedance data is summarized into tables and histograms by year, month, and day.
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Ozone Design Value Estimator
A tool that calculates the estimated design value using AirNow data with a user-selected Ozone threshold.
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