As of 1:27 PM MDT on July 15, 2025, all 11 cities in Fremont County, CO in our database have a UV Index reading of Extreme. The city with the highest UV Index reading right now is Rockvale, CO with a reading of 11.6.
Over the next 24 hours, the highest UV Index reading in Fremont County, CO is expected to be 11.6 in Rockvale 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 |