UV Index Today in Jefferson County, Colorado (CO)
Sunday, September 20, 2026 -10:23 AM MDT (GMT-6)
- Home
- United States
- Colorado
- Jefferson County
The average maximum UV Index today across 29 locations in Jefferson County, Colorado (CO), is 7.3. The highest projected maximum is 7.7 in Coal Creek at 1:00 PM MDT, while the lowest projected maximum is 7 in Westminster at 1:00 PM MDT.
Tomorrow, the average maximum UV Index across those same locations is expected to be 7.4. The highest projected maximum is 7.7 in Upper Bear Creek at 1:00 PM MDT, and the lowest projected maximum is 7.1 in Westminster at 1:00 PM MDT.
29 Places in Jefferson County, Colorado (CO)
Maximum UV Index Today