Cook County, IL: Current UV Index and Hourly Forecast

As of 2:03 PM CDT on April 1, 2025, all 119 cities in Cook County, IL in our database have a UV Index reading of Moderate. The city with the highest UV Index reading right now is Orland Park, IL with a reading of 3.7.

Over the next 24 hours, the highest UV Index reading in Cook County, IL is expected to be 3.7 in Orland Park between 2:00 PM - 3:00 PM CDT today.

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UV Index Risk Levels
Range0 - 23 - 56 - 78 - 1011+
Color
RiskLowModerateHighVery HighExtreme
UV Index in Cook County, IL as of 2:03 PM CDT, April 1, 2025

Current UV Index in Cities in Cook County, IL

2:03 PM CDT, April 1, 2025