UV Index Today in St. Louis city, Missouri (MO)
Wednesday, July 15, 2026 -12:03 PM CDT (GMT-5)
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The average maximum UV Index today across 17 locations in St. Louis city, Missouri (MO), is 10. The highest projected maximum is 10 in St. Louis at 1:00 PM CDT, while the lowest projected maximum is 10 in St. Louis at 1:00 PM CDT.
Tomorrow, the average maximum UV Index across those same locations is expected to be 9.5. The highest projected maximum is 10 in East St. Louis at 1:00 PM CDT, and the lowest projected maximum is 9.3 in St. Louis at 12:00 PM CDT.
17 Places in St. Louis city, Missouri (MO)
Maximum UV Index Today