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Indiana Department of Environmental Management

Air Quality in Indiana

Air Quality

One of the many responsibilities of the Indiana Department of Environmental Management (IDEM) is to protect the quality of Indiana’s air. This responsibility couldn’t be more important because air quality, or the lack of it, impacts the health of every person in our state every minute of every day. Good air quality helps us live our lives with vitality and energy. Poor air quality can cause harm to living things that are exposed to it.

The Clean Air Act (CAA) of 1970 began years of air quality improvement in our country. Health-based national ambient air quality standards (NAAQS) have been and continue to be the foundation of the CAA. These standards are maximum measurements allowed in our air by law, for each pollutant covered by the CAA. IDEM was established in 1986 to assist people and businesses located in Indiana to keep the air in Indiana at or below those standards. The following options offer access to more about how IDEM works to improve the air quality in Indiana.

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The States' View of the Air

The Indiana Department of Environmental Management (IDEM) has released The States’ View of the Air (2016) report. This report highlights the air quality in counties and cities in the United States. Like a report card, IDEM has graded areas on the state of their air quality under the federal standards for ozone and fine particles.

A Report About the Accuracy of a Tool Currently Used to Predict Air Quality

IDEM uses many tools to help in sound decision making in order to maintain or improve the air quality in Indiana. This report focuses on one such tool. The name of the tool is “AERMOD” and that is short for “American Meteorological Society/Environmental Protection Agency Regulatory Model”. This report assesses the accuracy of that model/tool.