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  4. Cook County

Cook County

Illinois

2026-05-20 03:00
AQI (US)
Good
Pollutants|Pollens
O3
μg/m³
45.5
PM2.5
μg/m³
3.3
PM10
μg/m³
7
Weather
  • ℃
  • ℉
17℃
78%
15 kph
0 of 11
Historical Data
  • Hourly
  • Daily
  • AQI (US)
  • Pollen
  • O3
  • PM2.5
  • PM10
Places included
Barrington Township
AQI 15
Berwyn Township
AQI 19
Bloom Township
AQI 24
Bremen Township
AQI 18
Calumet Township
AQI 20
Chicago
AQI 22
Cicero Township
AQI 20
Elk Grove Township
AQI 19
Evanston Township
AQI 24
Hanover Township
AQI 15
Lemont Township
AQI 17
Leyden Township
AQI 20
Lyons Township
AQI 19
Maine Township
AQI 20
New Trier Township
AQI 15
Niles Township
AQI 17
Northfield Township
AQI 24
Norwood Park Township
AQI 20
Oak Park Township
AQI 19
Orland Township
AQI 18
Palatine Township
AQI 16
Palos Township
AQI 18
Proviso Township
AQI 20
Rich Township
AQI 24
River Forest Township
AQI 19
Riverside Township
AQI 19
Schaumburg Township
AQI 20
Stickney Township
AQI 20
Thornton Township
AQI 24
Wheeling Township
AQI 17
Worth Township
AQI 21
Data Sources
http://www.airnow.gov/

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Cities Nearby

Evergreen Park
AQI 20
Hometown
AQI 20
Oak Lawn
AQI 20
Burbank
AQI 20
Merrionette Park
AQI 18
Bedford Park
AQI 20
Chicago Ridge
AQI 18
Alsip
AQI 21
Calumet Park
AQI 18
Bridgeview
AQI 19
Blue Island
AQI 18