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  4. Cook County

Cook County

Illinois

2026-05-21 19:00
AQI (China)
Excellent
Pollutants|Pollens
O3
μg/m³
79.4
PM2.5
μg/m³
6.9
PM10
μg/m³
5
Weather
  • ℃
  • ℉
15℃
71%
28 kph
4 of 11
Historical Data
  • Hourly
  • Daily
  • AQI (China)
  • Pollen
  • O3
  • PM2.5
  • PM10
Places included
Barrington Township
AQI 11
Berwyn Township
AQI 12
Bloom Township
AQI 9
Bremen Township
AQI 11
Calumet Township
AQI 10
Chicago
AQI 27
Cicero Township
AQI 25
Elk Grove Township
AQI 9
Evanston Township
AQI 26
Hanover Township
AQI 11
Lemont Township
AQI 13
Leyden Township
AQI 21
Lyons Township
AQI 13
Maine Township
AQI 25
New Trier Township
AQI 5
Niles Township
AQI 8
Northfield Township
AQI 27
Norwood Park Township
AQI 10
Oak Park Township
AQI 12
Orland Township
AQI 11
Palatine Township
AQI 9
Palos Township
AQI 12
Proviso Township
AQI 12
Rich Township
AQI 9
River Forest Township
AQI 12
Riverside Township
AQI 13
Schaumburg Township
AQI 10
Stickney Township
AQI 13
Thornton Township
AQI 11
Wheeling Township
AQI 8
Worth Township
AQI 27
Data Sources
http://www.airnow.gov/

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Cities Nearby

Evergreen Park
AQI 13
Hometown
AQI 13
Oak Lawn
AQI 13
Burbank
AQI 13
Merrionette Park
AQI 11
Bedford Park
AQI 13
Chicago Ridge
AQI 11
Alsip
AQI 27
Calumet Park
AQI 11
Bridgeview
AQI 13
Blue Island
AQI 11