As of 3:38 PM MDT on July 11, 2026, out of 495 cities in Montana in our database, 456 cities (92%) have a UV Index reading of Very High, while 39 cities (8%) have a UV Index reading of High. The city with the highest UV Index reading right now is Maverick Mountain, MT with a reading of 9.7.
Over the next 24 hours, the highest UV Index reading in Montana is expected to be 11.4 in Silver Gate 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 |