Good air quality translates to better health and a better quality of life. For example, one of the best ways to help keep the air clean is to drive less and walk, bike, and use transit more often. Driving less decreases traffic congestion, making it easier and more pleasant for everyone to get to their destination. And walking and biking increases overall physical health.

Clean air strategies also help spur economic development. Without them, the federal government can impose strict regulations on a region making it difficult for business and industry to expand or even relocate. However, there’s still more we can do to make visible difference in central Indiana’s air quality because poor air quality threatens economic prosperity, poses risks to human health, and is detrimental to the environment.

The Air Quality Index, or AQI, is a tool used for reporting daily air quality.  This score offers a glimpse as to how much pollution is in the air and what health effects may be noticeable.  As a general rule, a higher AQI value means higher air pollution levels.

Through the City’s Knozone Program, the City alerts citizens about the air quality through Knozone Action Days.

Today's Air Quality
Air Monitoring Data and Information
Particulate Matter 2.5 Micron
Ozone