As of 12:45 PM MDT on August 18, 2025, out of 8 cities in Fremont County, ID in our database, 5 cities (63%) have a UV Index reading of High, while 3 cities (38%) have a UV Index reading of Very High. The city with the highest UV Index reading right now is Island Park, ID with a reading of 7.6.
Over the next 24 hours, the highest UV Index reading in Fremont County, ID is expected to be 8.7 in Island Park 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 |