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  4. Cook County

Cook County

Illinois

2026-05-21 16:00
AQI (China)
Excellent
Pollutants|Pollens
O3
μg/m³
64.9
PM2.5
μg/m³
8.1
PM10
μg/m³
4
Weather
  • ℃
  • ℉
15℃
72%
17 kph
8 of 11
Historical Data
  • Hourly
  • Daily
  • AQI (China)
  • Pollen
  • O3
  • PM2.5
  • PM10
Places included
Barrington Township
AQI 7
Berwyn Township
AQI 9
Bloom Township
AQI 42
Bremen Township
AQI 16
Calumet Township
AQI 22
Chicago
AQI 21
Cicero Township
AQI 19
Elk Grove Township
AQI 7
Evanston Township
AQI 24
Hanover Township
AQI 7
Lemont Township
AQI 10
Leyden Township
AQI 17
Lyons Township
AQI 11
Maine Township
AQI 23
New Trier Township
AQI 4
Niles Township
AQI 6
Northfield Township
AQI 24
Norwood Park Township
AQI 8
Oak Park Township
AQI 9
Orland Township
AQI 12
Palatine Township
AQI 6
Palos Township
AQI 12
Proviso Township
AQI 9
Rich Township
AQI 42
River Forest Township
AQI 9
Riverside Township
AQI 11
Schaumburg Township
AQI 8
Stickney Township
AQI 12
Thornton Township
AQI 34
Wheeling Township
AQI 6
Worth Township
AQI 18
Data Sources
http://www.airnow.gov/

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Cities Nearby

Evergreen Park
AQI 12
Hometown
AQI 12
Oak Lawn
AQI 12
Burbank
AQI 12
Merrionette Park
AQI 12
Bedford Park
AQI 12
Chicago Ridge
AQI 12
Alsip
AQI 18
Calumet Park
AQI 12
Bridgeview
AQI 11
Blue Island
AQI 12