Illinois
64 monitoring stations · readings from 21 to 56
Average AQI
Air quality in Illinois
Air quality in Illinois is currently 47 on the AQI scale, which falls in the Good band. That number is the average across every monitoring station reporting in Illinois right now.
We aggregate 64 stations across Illinois. Individual stations range from 21 at the cleanest to 56 at the worst, so conditions vary across Illinois — the local figure matters more than the average.
Illinois breaks down into 43 cities you can open individually. Of those listed below, Savoy is reading highest at 56 and Stockton lowest at 21.
Readings refresh hourly from the official monitoring networks we track. Conditions can still change quickly, so check back before planning time outdoors.
What to do at good levels
Outdoor activity
No restrictions. This is a good day for exercise, commuting on foot or bike, and time outside.
Sensitive groups
Children, older adults and people with asthma or heart conditions can go about their day as normal.
Indoor air
Open the windows. Outdoor air is currently cleaner than typical indoor air, so ventilating helps.
Cities in Illinois
43 cities
Robinson
Moderate
- Stations
- 1
- Range
- 56–56
Savoy
Moderate
- Stations
- 1
- Range
- 56–56
55Champaign
Moderate
- Stations
- 3
- Range
- 54–56
54East St Louis
Moderate
- Stations
- 2
- Range
- 54–54
West Union
Moderate
- Stations
- 1
- Range
- 54–54
Moline
Moderate
- Stations
- 1
- Range
- 52–52
51Rock Island
Moderate
- Stations
- 2
- Range
- 50–52
Baldwin
Good
- Stations
- 1
- Range
- 50–50
Chester
Good
- Stations
- 1
- Range
- 50–50
50Decatur
Good
- Stations
- 2
- Range
- 50–50
50Granite City
Good
- Stations
- 3
- Range
- 50–50
50Jerseyville
Good
- Stations
- 2
- Range
- 50–50
Maryville
Good
- Stations
- 1
- Range
- 50–50
50Normal
Good
- Stations
- 2
- Range
- 50–50
Schiller Park
Good
- Stations
- 1
- Range
- 50–50
Wood River
Good
- Stations
- 1
- Range
- 50–50
Alton
Good
- Stations
- 1
- Range
- 46–46
Benton
Good
- Stations
- 1
- Range
- 46–46
46Cary
Good
- Stations
- 2
- Range
- 46–46
46Cicero
Good
- Stations
- 2
- Range
- 46–46
Des Plaines
Good
- Stations
- 1
- Range
- 46–46
East Peoria
Good
- Stations
- 1
- Range
- 46–46
Elgin
Good
- Stations
- 1
- Range
- 46–46
Glencoe
Good
- Stations
- 1
- Range
- 46–46
Glenview
Good
- Stations
- 1
- Range
- 46–46
46Joliet
Good
- Stations
- 2
- Range
- 46–46
Mccook
Good
- Stations
- 1
- Range
- 46–46
Mcleansboro
Good
- Stations
- 1
- Range
- 46–46
Northbrook
Good
- Stations
- 1
- Range
- 46–46
Oak Park
Good
- Stations
- 1
- Range
- 46–46
Peoria
Good
- Stations
- 1
- Range
- 46–46
46Springfield
Good
- Stations
- 2
- Range
- 46–46
45Chicago
Good
- Stations
- 5
- Range
- 42–50
42Alsip
Good
- Stations
- 2
- Range
- 42–42
Aurora
Good
- Stations
- 1
- Range
- 42–42
Braidwood
Good
- Stations
- 1
- Range
- 42–42
Evergreen Park
Good
- Stations
- 1
- Range
- 42–42
42Lansing
Good
- Stations
- 2
- Range
- 42–42
42Naperville
Good
- Stations
- 2
- Range
- 42–42
Wilmington
Good
- Stations
- 1
- Range
- 42–42
About Illinois
Coordinates
40.741, -88.719
Centroid of monitored stations
Stations
64
Reporting in this area
Spread
21 – 56
Cleanest to worst station reading
Other regions nearby
Illinois air quality, answered
Illinois is currently reading an AQI of 47, which is Good. It is the average across 64 reporting stations.
No restrictions. This is a good day for exercise, commuting on foot or bike, and time outside. Children, older adults and people with asthma or heart conditions can go about their day as normal.
47 sits in the Good band of the air quality index. The index runs from 0 to 500, and the lower the number the cleaner the air.
We currently aggregate 64 stations in Illinois, reading between 21 and 56.
Of the cities currently listed for Illinois, Savoy is reading highest at 56 (Moderate).
Hourly. We pull from the official monitoring networks that publish for this region, and this page refreshes on the same cadence.
See Illinois on the map.
Every station around it, live — or find out what today's reading means for you personally.