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DEM issues Air Quality Action Day Today for Four Indiana Regions

Last updated on Friday, July 13, 2018

(INDIANAPOLIS) - The Indiana Department of Environmental Management (IDEM) has issued an Air Quality Action Day and is forecasting high ozone levels for today, in the following areas:

Central Indiana - Marion, Bartholomew, Boone, Brown, Delaware, Hamilton, Hancock, Hendricks, Johnson, Madison, Monroe, Morgan and Shelby

Southeast Indiana - Clark, Floyd, Harrison, Jackson, Jefferson, Scott and Washington
Southwest Indiana - Daviess, Dubois, Gibson, Greene, Knox, Perry, Pike, Posey, Spencer, Vanderburgh and Warrick

West Central Indiana - Vigo

IDEM encourages everyone to help reduce ozone by making simple changes to their daily habits. You can:

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IDEM examines weather patterns and current ozone readings to make daily air quality forecasts. To learn more about ozone or sign up for air quality forecasts, visit www.SmogWatch.IN.gov or download our iPhone App here

Ground-level ozone is formed when sunlight and hot weather bake vehicle exhaust, factory emissions and gasoline vapors. Ozone in the upper atmosphere blocks ultraviolet radiation, but ozone near the ground is a lung irritant that can cause coughing and breathing difficulties.

About the ozone standard: On October 1, 2015, the United States Environmental Protection Agency (U.S. EPA) finalized the National Ambient Air Quality Standards (NAAQS) for ground-level ozone. The new rule sets more stringent standards, lowering both the primary (health-based) and secondary (welfare-based) standards from 75 parts per billion (ppb) to 70 ppb. IDEM encourages all Hoosiers to be proactive and help reduce ozone for those who may be sensitive.

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