Next 24 hours

US AQI

52Now
49
47
4510 PM
43
44
441 AM
45
44
444 AM
43
41
397 AM
37
39
4010 AM
41
31
221 PM
12
28
434 PM
59
56

Air quality outlook

Worst hour each day

Today73Moderate
Thu 859Moderate
Fri 9118Unhealthy for sensitive groups
Sat 10100Moderate
Sun 1173Moderate

From our air-quality forecast models (GEOS-CF / GEFS aerosols). AQI uses the US EPA scale.

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About Champaign weather

Champaign is in Champaign County, Illinois, United States at 40.12°, -88.24°. Right now it’s 74° and clear; today’s high is 85° with a 0% chance of rain.

Illinois has a humid continental climate with distinct seasons marked by cold, snowy winters and hot, humid summers. The state's flat terrain allows weather systems to move across without obstruction, leading to rapid temperature changes. Chicago's position on Lake Michigan creates a unique lake-effect weather pattern that can moderate summer heat and intensify winter snowfall.