Next 24 hours

US AQI

36Now
35
33
326 AM
31
29
329 AM
35
37
3812 PM
39
39
413 PM
42
43
456 PM
47
49
469 PM
44
41
4112 AM
41
41

Air quality outlook

Worst hour each day

Today49Good
Sat 1049Good
Sun 11500Hazardous
Mon 1284Moderate
Tue 1337Good

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

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About Waukegan weather

Waukegan is in Lake County, Illinois, United States at 42.36°, -87.84°. Right now it’s 49° and mostly clear; today’s high is 65° with a 28% 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.