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  4. Cook County

Cook County

Illinois

2026-05-23 05:00
AQI (US)
Good
Pollutants|Pollens
O3
μg/m³
78.1
PM2.5
μg/m³
4.6
PM10
μg/m³
13
Weather
  • ℃
  • ℉
17℃
76%
17 kph
0 of 11
Historical Data
  • Hourly
  • Daily
  • AQI (US)
  • Pollen
  • O3
  • PM2.5
  • PM10
Places included
Barrington Township
AQI 20
Berwyn Township
AQI 27
Bloom Township
AQI 27
Bremen Township
AQI 28
Calumet Township
AQI 28
Chicago
AQI 34
Cicero Township
AQI 32
Elk Grove Township
AQI 24
Evanston Township
AQI 42
Hanover Township
AQI 20
Lemont Township
AQI 35
Leyden Township
AQI 27
Lyons Township
AQI 27
Maine Township
AQI 38
New Trier Township
AQI 23
Niles Township
AQI 23
Northfield Township
AQI 42
Norwood Park Township
AQI 27
Oak Park Township
AQI 27
Orland Township
AQI 28
Palatine Township
AQI 21
Palos Township
AQI 28
Proviso Township
AQI 27
Rich Township
AQI 27
River Forest Township
AQI 27
Riverside Township
AQI 27
Schaumburg Township
AQI 27
Stickney Township
AQI 26
Thornton Township
AQI 31
Wheeling Township
AQI 22
Worth Township
AQI 29
Data Sources
http://www.airnow.gov/

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Cities Nearby

Evergreen Park
AQI 25
Hometown
AQI 25
Oak Lawn
AQI 25
Burbank
AQI 25
Merrionette Park
AQI 28
Bedford Park
AQI 25
Chicago Ridge
AQI 28
Alsip
AQI 29
Calumet Park
AQI 28
Bridgeview
AQI 27
Blue Island
AQI 28