UV Index Today in Jefferson County, Kentucky (KY)
Friday, May 22, 2026 -2:39 PMEDT (GMT-4)
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The average maximum UV Index today across 55 locations in Jefferson County, Kentucky (KY), is 1.3. The highest projected maximum is 1.4 in Louisville at 10:00 AM EDT, while the lowest projected maximum is 1.2 in Jeffersontown at 1:00 PM EDT.
Tomorrow, the average maximum UV Index across those same locations is expected to be 2.5. The highest projected maximum is 6.8 in Mount Washington at 3:00 PM EDT, and the lowest projected maximum is 1.7 in Louisville at 6:00 PM EDT.
55 Places in Jefferson County, Kentucky (KY)
Maximum UV Index Today