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  4. Cook County

Cook County

Illinois

2026-05-21 14:00
AQI (US)
Good
Pollutants|Pollens
O3
μg/m³
61.1
PM2.5
μg/m³
3.5
PM10
μg/m³
2
Weather
  • ℃
  • ℉
12℃
76%
19 kph
7 of 11
Historical Data
  • Hourly
  • Daily
  • AQI (US)
  • Pollen
  • O3
  • PM2.5
  • PM10
Places included
Barrington Township
AQI 16
Berwyn Township
AQI 18
Bloom Township
AQI 45
Bremen Township
AQI 22
Calumet Township
AQI 28
Chicago
AQI 27
Cicero Township
AQI 24
Elk Grove Township
AQI 15
Evanston Township
AQI 31
Hanover Township
AQI 16
Lemont Township
AQI 23
Leyden Township
AQI 19
Lyons Township
AQI 20
Maine Township
AQI 31
New Trier Township
AQI 10
Niles Township
AQI 15
Northfield Township
AQI 32
Norwood Park Township
AQI 17
Oak Park Township
AQI 18
Orland Township
AQI 19
Palatine Township
AQI 15
Palos Township
AQI 20
Proviso Township
AQI 19
Rich Township
AQI 45
River Forest Township
AQI 18
Riverside Township
AQI 20
Schaumburg Township
AQI 17
Stickney Township
AQI 20
Thornton Township
AQI 39
Wheeling Township
AQI 14
Worth Township
AQI 25
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 19
Bedford Park
AQI 20
Chicago Ridge
AQI 19
Alsip
AQI 25
Calumet Park
AQI 19
Bridgeview
AQI 20
Blue Island
AQI 19