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United States · Illinois

Air quality & tree cover in Illinois

Today's air quality (AQI) and satellite-measured tree cover for Illinois's cities, each over the same 1.2 mi (2 km) around its center.

Right now, Chicago has the cleanest air of the 6 Illinois cities we track (AQI 42, Good), and Naperville the worst (AQI 53, Moderate). Naperville has the most tree cover, at 61.3% — #12 of 270 large US cities.

Places tracked
6
Average tree cover
46.0%US cities: 29.4%
Worst air right now
NapervilleAQI 53

Air quality today and tree cover across Illinois

Current air quality and tree cover for cities in Illinois
Chicago42Good11.6%56.9K#211 of 270
Rockford44Good53.7%—#27 of 270
Joliet53Moderate46.1%—#46 of 270
Naperville53Moderate61.3%—#12 of 270
Peoria44Good43.5%—#53 of 270
Elgin52Moderate59.6%—#13 of 270

Air quality is the US AQI from Open-Meteo / CAMS, refreshed hourly. Tree cover is measured within 1.2 mi (2 km) of each city center from Sentinel-2 imagery. The US greenness rank covers cities of 100,000+ people; see the full ranking.

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Check any address in Illinois, not just the big cities.

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