Boulder County, CO: Current UV Index and Hourly Forecast

As of 9:20 AM MDT on June 28, 2025, all 31 cities in Boulder County, CO in our database have a UV Index reading of Moderate. The city with the highest UV Index reading right now is Nederland, CO with a reading of 3.5.

Over the next 24 hours, the highest UV Index reading in Boulder County, CO is expected to be 11 in Nederland between 1:00 PM - 2:00 PM MDT today.

Search Cities in Boulder County, CO

UV Index Risk Levels
Range0 - 23 - 56 - 78 - 1011+
Color
RiskLowModerateHighVery HighExtreme
UV Index in Boulder County, CO as of 9:20 AM MDT, June 28, 2025

Current UV Index in Cities in Boulder County, CO

9:20 AM MDT, June 28, 2025