As of 11:38 AM MDT on September 5, 2026, out of 331 cities in Utah in our database, 253 cities (76%) have a UV Index reading of Moderate, while 78 cities (24%) have a UV Index reading of High. The city with the highest UV Index reading right now is Bluff, UT with a reading of 6.1.
Over the next 24 hours, the highest UV Index reading in Utah is expected to be 9.9 in Boulder between 1:00 PM - 2:00 PM MDT today.
| Range | 0 - 2 | 3 - 5 | 6 - 7 | 8 - 10 | 11+ |
|---|---|---|---|---|---|
| Color | |||||
| Risk | Low | Moderate | High | Very High | Extreme |