SmogRank / World / United States / Illinois / November 2024
Most polluted cities in Illinois, United States, November 2024
27 cities in Illinois, United States ranked by their average PM2.5 over the 30 days. Worst: Oak Lawn at 8.9 µg/m³, #1,087 of 2,572 cities in the world. Cleanest: Jerseyville at 4.3. A city needs measurements on 70% of the days to be ranked.
Ranked by unhealthy days: the share of each city's measured days with a daily mean over 35.4 µg/m³ (US AQI 101+), Unhealthy for Sensitive Groups or worse on the US EPA's scale. Ties go to the higher average.
- 1Oak Lawn 0%
- 2Chicago 0%
- 3Brookfield 0%
- 3Elgin 0%
- 5Cary 0%
- 6Decatur 0%
- 7Joliet 0%
- 8Naperville 0%
- 8Peoria 0%
- 10Moline 0%
- 11Calumet City 0%
- 11Rockford 0%
- 13Braidwood 0%
- 13Franklin Park 0%
- 15Granite City 0%
- 16Warrenville 0%
- 17Bloomington 0%
- 17Champaign 0%
- 19Upper Alton 0%
- 19Des Plaines 0%
- 21Wood River 0%
- 21Northbrook 0%
- 23Winthrop Harbor 0%
- 24East Saint Louis 0%
- 25Springfield 0%
- 25Savoy 0%
- 27Jerseyville 0%
The US EPA's Air Quality Index for PM2.5 (2024 breakpoints). Show values as: µg/m³ · US AQI · India AQI · China AQI · European AQI · UK DAQI · Canada AQHI+. About the scales
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SmogRank, most polluted cities in Illinois, United States, PM2.5, November 2024, smogrank.com/us/region/illinois/history/2024-11 (accessed 6 Oct 2026).
You're welcome to reuse a single chart, image or figure with this citation and a link. Terms. Raw monitor readings in bulk are published by OpenAQ, under each provider's licence.