St. Louis City, MO: Current UV Index and Hourly Forecast

As of 2:01 PM CDT on August 22, 2025, all 1 cities in St. Louis City, MO in our database have a UV Index reading of Very High. The city with the highest UV Index reading right now is St. Louis, MO with a reading of 8.4.

Over the next 24 hours, the highest UV Index reading in St. Louis City, MO is expected to be 8.5 in St. Louis 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 St. Louis City, MO as of 2:01 PM CDT, August 22, 2025

Current UV Index in Cities in St. Louis City, MO

2:01 PM CDT, August 22, 2025