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  4. Cook County

Cook County

Illinois

2026-05-21 15:00
AQI (US)
Good
Pollutants|Pollens
O3
μg/m³
61.1
PM2.5
μg/m³
4.4
PM10
μg/m³
3
Weather
  • ℃
  • ℉
13℃
76%
19 kph
7 of 11
Historical Data
  • Hourly
  • Daily
  • AQI (US)
  • Pollen
  • O3
  • PM2.5
  • PM10
Places included
Barrington Township
AQI 20
Berwyn Township
AQI 23
Bloom Township
AQI 41
Bremen Township
AQI 27
Calumet Township
AQI 30
Chicago
AQI 32
Cicero Township
AQI 24
Elk Grove Township
AQI 20
Evanston Township
AQI 32
Hanover Township
AQI 20
Lemont Township
AQI 27
Leyden Township
AQI 21
Lyons Township
AQI 30
Maine Township
AQI 30
New Trier Township
AQI 13
Niles Township
AQI 18
Northfield Township
AQI 32
Norwood Park Township
AQI 22
Oak Park Township
AQI 23
Orland Township
AQI 25
Palatine Township
AQI 19
Palos Township
AQI 29
Proviso Township
AQI 25
Rich Township
AQI 41
River Forest Township
AQI 23
Riverside Township
AQI 30
Schaumburg Township
AQI 22
Stickney Township
AQI 32
Thornton Township
AQI 40
Wheeling Township
AQI 18
Worth Township
AQI 28
Data Sources
http://www.airnow.gov/

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Cities Nearby

Evergreen Park
AQI 33
Hometown
AQI 33
Oak Lawn
AQI 33
Burbank
AQI 33
Merrionette Park
AQI 25
Bedford Park
AQI 33
Chicago Ridge
AQI 25
Alsip
AQI 25
Calumet Park
AQI 25
Bridgeview
AQI 30
Blue Island
AQI 25