Air Quality Reports

The Bureau of Air is committed to ensuring clean, safe air for Illinois’ citizens and the environment. The Bureau of Air monitors and evaluates ambient air quality, develops plans to attain new and existing national ambient air quality standards, runs an air permitting program, regularly inspects sources of pollution, and enforces applicable requirements. Furthermore, the Bureau ensures mandatory and voluntary mobile source emission reduction programs are implemented, such as the vehicles emissions inspection and maintenance program operated in the Chicago metropolitan and Metro-East St. Louis areas.