Air Quality Index Graph

This graph indicates the AQI for a specific monitor and pollutant. Select any site, date, parameter and time frame. The color of the bars indicates the AQI level. The AQI for each pollutant is calculated using a standard averaging interval: PM 24-hr; O3 8-hr; CO, SO2 and NO2 1-hr.

Please wait while page loads. Data not Quality Assured. For National Ambient Air Quality Standards, click here. For more information or to obtain historical data, please contact us.
Ozone data are unavailable for most sites November 1 through February 29