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  4. Cook County

Cook County

Illinois

2026-05-21 12:00
AQI (US)
Good
Pollutants|Pollens
O3
μg/m³
66.2
PM2.5
μg/m³
2.1
PM10
μg/m³
5
Weather
  • ℃
  • ℉
11℃
78%
20 kph
1 of 11
Historical Data
  • Hourly
  • Daily
  • AQI (US)
  • Pollen
  • O3
  • PM2.5
  • PM10
Places included
Barrington Township
AQI 10
Berwyn Township
AQI 14
Bloom Township
AQI 18
Bremen Township
AQI 11
Calumet Township
AQI 13
Chicago
AQI 29
Cicero Township
AQI 24
Elk Grove Township
AQI 12
Evanston Township
AQI 34
Hanover Township
AQI 10
Lemont Township
AQI 12
Leyden Township
AQI 21
Lyons Township
AQI 15
Maine Township
AQI 35
New Trier Township
AQI 7
Niles Township
AQI 10
Northfield Township
AQI 34
Norwood Park Township
AQI 14
Oak Park Township
AQI 14
Orland Township
AQI 10
Palatine Township
AQI 10
Palos Township
AQI 13
Proviso Township
AQI 14
Rich Township
AQI 18
River Forest Township
AQI 14
Riverside Township
AQI 15
Schaumburg Township
AQI 14
Stickney Township
AQI 15
Thornton Township
AQI 16
Wheeling Township
AQI 9
Worth Township
AQI 28
Data Sources
http://www.airnow.gov/

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Cities Nearby

Evergreen Park
AQI 15
Hometown
AQI 15
Oak Lawn
AQI 15
Burbank
AQI 15
Merrionette Park
AQI 10
Bedford Park
AQI 15
Chicago Ridge
AQI 10
Alsip
AQI 28
Calumet Park
AQI 10
Bridgeview
AQI 15
Blue Island
AQI 10