UV Index Today in Jefferson County, Colorado (CO)
Wednesday, July 15, 2026 -11:05 AM MDT (GMT-6)
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The average maximum UV Index today across 29 locations in Jefferson County, Colorado (CO), is 11.8. The highest projected maximum is 12.3 in Coal Creek at 1:00 PM MDT, while the lowest projected maximum is 11.4 in Westminster at 1:00 PM MDT.
Tomorrow, the average maximum UV Index across those same locations is expected to be 11.6. The highest projected maximum is 12.1 in Coal Creek at 1:00 PM MDT, and the lowest projected maximum is 11.2 in Westminster at 1:00 PM MDT.
29 Places in Jefferson County, Colorado (CO)
Maximum UV Index Today