UV Index Today in Colorado (CO)

Tuesday, April 7, 2026 - 2:45 AM MDT (GMT-6)

The average maximum UV Index today across 286 locations in Colorado (CO), is 7. The highest projected maximum is 8.5 in Cortez at 1:00 PM MDT, while the lowest projected maximum is 5.2 in Manitou Springs at 12:00 PM MDT.

Tomorrow, the average maximum UV Index across those same locations is expected to be 7.4. The highest projected maximum is 8.9 in Silverton at 1:00 PM MDT, and the lowest projected maximum is 6.4 in Wellington 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 - 7
  • Arapahoe County - 7
  • Boulder County - 6.7
  • Denver County - 7
  • Douglas County - 6.9
  • El Paso County - 6.4
  • Jefferson County - 6.4
  • Larimer County - 6.8
  • Weld County - 7.1
Data Source: National Oceanic and Atmospheric Administration (NOAA)

286 Places in Colorado (CO)

Maximum UV Index Today
  • Aurora - 7.2
  • Colorado Springs - 6.4
  • Denver - 7.1
Data Source: National Oceanic and Atmospheric Administration (NOAA)