As of 3:46 PM MDT on June 10, 2026, out of 237 cities in Idaho in our database, 91 cities (38%) have a UV Index reading of Very High, 64 cities (27%) have a UV Index reading of Moderate, 58 cities (24%) have a UV Index reading of High, while 24 cities (10%) have a UV Index reading of Low. The city with the highest UV Index reading right now is Hollister, ID with a reading of 8.4.
Over the next 24 hours, the highest UV Index reading in Idaho is expected to be 10.6 in St. Charles 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 |