Madison County, IL: Current UV Index and Hourly Forecast

As of 6:05 PM CDT on April 11, 2025, all 32 cities in Madison County, IL in our database have a UV Index reading of Low. The city with the highest UV Index reading right now is Alton, IL with a reading of 0.3.

Over the next 24 hours, the highest UV Index reading in Madison County, IL is expected to be 7.3 in Granite City between 1:00 PM - 2:00 PM CDT tomorrow.

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UV Index Risk Levels
Range0 - 23 - 56 - 78 - 1011+
Color
RiskLowModerateHighVery HighExtreme
UV Index in Madison County, IL as of 6:05 PM CDT, April 11, 2025

Current UV Index in Cities in Madison County, IL

6:05 PM CDT, April 11, 2025