Illinois Air Quality Index (AQI) | Air Pollution
Real-time PM2.5, PM10 air pollution level in Illinois
Check the air quality level of thecities in Illinois
Illinois
Illinois's Cities
Real-time Air Pollution Level
United States's Metro Cities
Air Quality Index
Most Polluted Cities 2026
United States
Analyze the real-time most air polluted cities in the country.
Standard Value
1.
Appleton, Wisconsin
Severe
11xabove Standard
2.
Rhinelander, Wisconsin
Severe
11xabove Standard
3.
Baraboo, Wisconsin
Severe
10xabove Standard
4.
Green Bay, Wisconsin
Unhealthy
10xabove Standard
5.
Madison, Wisconsin
Unhealthy
9xabove Standard
6.
Waukesha, Wisconsin
Unhealthy
7xabove Standard
7.
Rock Island, Illinois
Unhealthy
7xabove Standard
8.
Cedar Rapids, Iowa
Unhealthy
7xabove Standard
9.
Iowa City, Iowa
Unhealthy
7xabove Standard
10.
Davenport, Iowa
Unhealthy
6xabove Standard
Last Updated: 19 Jul 2026, 03:03 PM
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