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.
Nampa, Idaho
Unhealthy
5xabove Standard
2.
Rhinelander, Wisconsin
Unhealthy
5xabove Standard
3.
Grand Rapids, Michigan
Unhealthy
5xabove Standard
4.
Colville, Washington
Unhealthy
5xabove Standard
5.
Meridian, Idaho
Unhealthy
5xabove Standard
6.
Holland, Michigan
Unhealthy
5xabove Standard
7.
Rochester, Minnesota
Unhealthy
4xabove Standard
8.
Ashland, Wisconsin
Unhealthy
4xabove Standard
9.
Kalamazoo, Michigan
Unhealthy
4xabove Standard
10.
Appleton, Wisconsin
Poor
4xabove Standard
Last Updated: 20 Jul 2026, 08:43 AM
AQI City RankingsAir Quality Solutions For Illinois
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