Best Air Quality Cities in Illinois Today

Cities ranked by current Air Quality Index (AQI) readings across Illinois.

Recent Locations:

Cities in Illinois Ranked by Lowest Air Quality Index (AQI)

This ranking compares real-time Air Quality Index (AQI) values to highlight where air pollution levels are currently lowest and air conditions are most favorable.

Air quality can change quickly due to wind shifts, wildfire smoke, traffic emissions, and other environmental factors.

[*] Note: Weather information applies only to cities currently available in our database. We are continuously expanding and updating our coverage, but we do not yet provide weather data for all cities in the United States.