UV Index Today in Colorado (CO)

Wednesday, July 15, 2026 -10:12 AM MDT (GMT-6)

The average maximum UV Index today across 286 locations in Colorado (CO), is 11.5. The highest projected maximum is 12.5 in Silverthorne at 1:00 PM MDT, while the lowest projected maximum is 8.8 in Silver Cliff at 11:00 AM MDT.

Tomorrow, the average maximum UV Index across those same locations is expected to be 11.3. The highest projected maximum is 12.3 in Vail at 1:00 PM MDT, and the lowest projected maximum is 8.2 in Beulah Valley at 12:00 PM MDT.

Data Source: National Oceanic and Atmospheric Administration (NOAA)

64 Counties in Colorado (CO)

Average Maximum UV Index Today
  • Adams County - 11.5
  • Arapahoe County - 11.6
  • Boulder County - 11.7
  • Denver County - 11.5
  • Douglas County - 11.7
  • El Paso County - 11.7
  • Jefferson County - 11.8
  • Larimer County - 11.5
  • Weld County - 11.3
Data Source: National Oceanic and Atmospheric Administration (NOAA)

286 Places in Colorado (CO)

Maximum UV Index Today
  • Aurora - 11.5
  • Colorado Springs - 11.5
  • Denver - 11.5
Data Source: National Oceanic and Atmospheric Administration (NOAA)