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  4. Cook County

Cook County

Illinois

2026-05-19 23:00
AQI (US)
Good
Pollutants|Pollens
O3
μg/m³
50.4
PM2.5
μg/m³
3.3
PM10
μg/m³
5
Weather
  • ℃
  • ℉
21℃
77%
24 kph
0 of 11
Historical Data
  • Hourly
  • Daily
  • AQI (US)
  • Pollen
  • O3
  • PM2.5
  • PM10
Places included
Barrington Township
AQI 21
Berwyn Township
AQI 17
Bloom Township
AQI 17
Bremen Township
AQI 16
Calumet Township
AQI 16
Chicago
AQI 29
Cicero Township
AQI 22
Elk Grove Township
AQI 21
Evanston Township
AQI 25
Hanover Township
AQI 21
Lemont Township
AQI 23
Leyden Township
AQI 24
Lyons Township
AQI 16
Maine Township
AQI 24
New Trier Township
AQI 14
Niles Township
AQI 18
Northfield Township
AQI 25
Norwood Park Township
AQI 24
Oak Park Township
AQI 17
Orland Township
AQI 15
Palatine Township
AQI 19
Palos Township
AQI 16
Proviso Township
AQI 20
Rich Township
AQI 17
River Forest Township
AQI 17
Riverside Township
AQI 16
Schaumburg Township
AQI 24
Stickney Township
AQI 17
Thornton Township
AQI 21
Wheeling Township
AQI 18
Worth Township
AQI 24
Data Sources
http://www.airnow.gov/

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Cities Nearby

Evergreen Park
AQI 17
Hometown
AQI 17
Oak Lawn
AQI 17
Burbank
AQI 17
Merrionette Park
AQI 15
Bedford Park
AQI 17
Chicago Ridge
AQI 15
Alsip
AQI 24
Calumet Park
AQI 15
Bridgeview
AQI 16
Blue Island
AQI 15