Air Quality Graphs

The Air Quality Index Graph indicates the Air Quality Index (AQI) for a specific monitor and pollutant. The AQI for each pollutant is calculated using a standard averaging interval: 

  • PM 24-hr
  • O3 8-hr; CO
  • SO2 and NO2 1-hr

To convert the hourly concentration to the Air Quality Index, use the AQI Calculator

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