UV Index Today in St. Louis city, Missouri (MO)
Tuesday, April 7, 2026 - 3:54 AM CDT (GMT-5)
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The average maximum UV Index today across 17 locations in St. Louis city, Missouri (MO), is 4.6. The highest projected maximum is 4.6 in St. Louis at 1:00 PM CDT, while the lowest projected maximum is 4.6 in St. Louis at 1:00 PM CDT.
Tomorrow, the average maximum UV Index across those same locations is expected to be 5.5. The highest projected maximum is 5.5 in St. Louis at 1:00 PM CDT, and the lowest projected maximum is 5.4 in East St. Louis at 1:00 PM CDT.
17 Places in St. Louis city, Missouri (MO)
Maximum UV Index Today