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US AQI

36Now
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33
356 AM
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379 AM
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3712 PM
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413 PM
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466 PM
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449 PM
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4412 AM
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Air quality outlook

Worst hour each day

Today47Good
Sat 1049Good
Sun 11500Hazardous
Mon 1282Moderate
Tue 1338Good

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

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About Des Plaines weather

Des Plaines is in Cook County, Illinois, United States at 42.03°, -87.88°. Right now it’s 58° and cloudy; today’s high is 69° with a 31% 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.