• This map animates yesterday's hourly ozone readings from throughout the area. You may review the readings by holding your mouse over any of the monitors. Color coding on the map and the data correspond to the AQI levels listed on the far left.

  • This map displays 1 hour average Ozone concentrations, which is different from the Regional Air Quality Index shown in top right of this page based on 8 hour averages. Click for information on the difference between AQI and Ozone Concentrations.

  • These data are meant to show the current ozone levels to help visitors make decisions on short term exposure. If you are interested in longer-term forecasts please sign up for electronic forecasts via Enviroflash, or click to view forecasts for today and tomorrow.

  • Data shown have not been checked for accuracy.

  • Click for current ozone map

  • Click for historical data and maps

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    Note: Ozone season is open from April 1st to Octomber 30 in each year. please click here to view historical maps and data. please click here to view PM2.5 Map

    www.mvrpc.org Miami Valley Air, the SMOGinator, Ride$hare and the Miami Valley Air Quality Program all sponsored by the Miami Valley Regional Planning Commission.

    Questions, comments? Please contact airquality@mvrpc.org

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    www.mvrpc.org