Jefferson County, KY: Current UV Index and Hourly Forecast

As of 6:36 PM EDT on July 29, 2025, all 83 cities in Jefferson County, KY in our database have a UV Index reading of Low. The city with the highest UV Index reading right now is Louisville, KY with a reading of 2.3.

Over the next 24 hours, the highest UV Index reading in Jefferson County, KY is expected to be 9.7 in Heritage Creek between 2:00 PM - 3:00 PM EDT tomorrow.

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UV Index Risk Levels
Range0 - 23 - 56 - 78 - 1011+
Color
RiskLowModerateHighVery HighExtreme
UV Index in Jefferson County, KY as of 6:36 PM EDT, July 29, 2025

Current UV Index in Cities in Jefferson County, KY

6:36 PM EDT, July 29, 2025