Jefferson County, MO: Current UV Index and Hourly Forecast

As of 2:37 PM CDT on April 1, 2025, out of 25 cities in Jefferson County, MO in our database, 16 cities (64%) have a UV Index reading of High, while 9 cities (36%) have a UV Index reading of Moderate. The city with the highest UV Index reading right now is Cedar Hill, MO with a reading of 5.8.

Over the next 24 hours, the highest UV Index reading in Jefferson County, MO is expected to be 5.8 in Cedar Hill between 2:00 PM - 3:00 PM CDT today.

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UV Index Risk Levels
Range0 - 23 - 56 - 78 - 1011+
Color
RiskLowModerateHighVery HighExtreme
UV Index in Jefferson County, MO as of 2:37 PM CDT, April 1, 2025

Current UV Index in Cities in Jefferson County, MO

2:37 PM CDT, April 1, 2025