Next 24 hours

US AQI

40Now
39
37
356 AM
33
31
329 AM
33
33
3512 PM
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39
413 PM
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436 PM
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419 PM
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4412 AM
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Air quality outlook

Worst hour each day

Today45Good
Sat 1049Good
Sun 11500Hazardous
Mon 1278Moderate
Tue 1338Good

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

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About Palatine weather

Palatine is in Cook County, Illinois, United States at 42.11°, -88.03°. Right now it’s 54° and cloudy; today’s high is 69° with a 32% 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.