UV Index Today in Madison County, Illinois (IL)
Wednesday, July 15, 2026 -12:00 PM CDT (GMT-5)
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The average maximum UV Index today across 55 locations in Madison County, Illinois (IL), is 10. The highest projected maximum is 10.1 in Wood River at 1:00 PM CDT, while the lowest projected maximum is 9.9 in Edwardsville at 1:00 PM CDT.
Tomorrow, the average maximum UV Index across those same locations is expected to be 9.8. The highest projected maximum is 10 in Wood River at 1:00 PM CDT, and the lowest projected maximum is 9.3 in St. Louis at 12:00 PM CDT.
23 County Subdivisions in Madison County, Illinois (IL)
Maximum UV Index Today
32 Places in Madison County, Illinois (IL)
Maximum UV Index Today