As of 4:07 PM MDT on August 8, 2025, all 9 cities in Garfield County, UT in our database have a UV Index reading of High. The city with the highest UV Index reading right now is Boulder, UT with a reading of 6.8.
Over the next 24 hours, the highest UV Index reading in Garfield County, UT is expected to be 10.9 in Boulder between 1:00 PM - 2:00 PM MDT tomorrow.
| Range | 0 - 2 | 3 - 5 | 6 - 7 | 8 - 10 | 11+ |
|---|---|---|---|---|---|
| Color | |||||
| Risk | Low | Moderate | High | Very High | Extreme |