UV Index Today in Colorado (CO)

Saturday, August 29, 2026 -10:46 AM MDT (GMT-6)

The average maximum UV Index today across 286 locations in Colorado (CO), is 8.2. The highest projected maximum is 10 in Mancos at 1:00 PM MDT, while the lowest projected maximum is 4.7 in Mountain Village at 3:00 PM MDT.

Tomorrow, the average maximum UV Index across those same locations is expected to be 6.8. The highest projected maximum is 10 in Trinidad at 1:00 PM MDT, and the lowest projected maximum is 3.3 in Laporte at 1:00 PM MDT.

Data Source: National Oceanic and Atmospheric Administration (NOAA)

64 Counties in Colorado (CO)

Average Maximum UV Index Today
  • Adams County - 8.2
  • Arapahoe County - 8.5
  • Boulder County - 7.8
  • Denver County - 8.1
  • Douglas County - 8.6
  • El Paso County - 7.9
  • Jefferson County - 7.9
  • Larimer County - 7.8
  • Weld County - 8
Data Source: National Oceanic and Atmospheric Administration (NOAA)

286 Places in Colorado (CO)

Maximum UV Index Today
  • Aurora - 8.7
  • Colorado Springs - 7.7
  • Denver - 8
Data Source: National Oceanic and Atmospheric Administration (NOAA)