Utah (UT): Current UV Index and Hourly Forecast

As of 7:20 PM MDT on September 17, 2025, all 331 cities in Utah in our database have a UV Index reading of Low. The city with the highest UV Index reading right now is St. George, UT with a reading of 0.2.

Over the next 24 hours, the highest UV Index reading in Utah is expected to be 8.5 in Boulder between 1:00 PM - 2:00 PM MDT tomorrow.

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UV Index Risk Levels
Range0 - 23 - 56 - 78 - 1011+
Color
RiskLowModerateHighVery HighExtreme
UV Index in Utah as of 7:20 PM MDT, September 17, 2025

Counties in Utah (UT)

Current UV Index in Major Cities in Utah (UT)

7:20 PM MDT, September 17, 2025