As of 11:34 AM MDT on May 21, 2026, all 11 cities in Fremont County, CO in our database have a UV Index reading of High. The city with the highest UV Index reading right now is Coaldale, CO with a reading of 7.1.
Over the next 24 hours, the highest UV Index reading in Fremont County, CO is expected to be 9.5 in Coaldale 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 |