IDEM: Indiana Ozone and Fine Particle Nonattainment Designations

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Governor Mitch Daniels

IDEM > Monitoring > Air Monitoring > Attainment and Redesignations > Indiana Ozone and Fine Particle Nonattainment Designations Indiana Ozone and Fine Particle Nonattainment Designations

This Web site is dedicated to Indiana's Nonattainment area designations for counties that do not meet the National Ambient Air Quality Standards (NAAQS). Nonattainment areas are regions within the country where the concentration of one or more criteria pollutants exceeds the level set as the federal air quality standards.