UV Index Today in Weld County, Colorado (CO)
Sunday, September 20, 2026 -10:23 AM MDT (GMT-6)
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The average maximum UV Index today across 32 locations in Weld County, Colorado (CO), is 6.9. The highest projected maximum is 7 in Thornton at 1:00 PM MDT, while the lowest projected maximum is 6.7 in Pierce at 1:00 PM MDT.
Tomorrow, the average maximum UV Index across those same locations is expected to be 6.9. The highest projected maximum is 7.1 in Thornton at 1:00 PM MDT, and the lowest projected maximum is 6.6 in Pierce at 1:00 PM MDT.
32 Places in Weld County, Colorado (CO)
Maximum UV Index Today