As of 4:43 PM MDT on May 29, 2026, out of 18 cities in Gallatin County, MT in our database, 10 cities (56%) have a UV Index reading of High, 7 cities (39%) have a UV Index reading of Moderate, while 1 city (6%) have a UV Index reading of Low. The city with the highest UV Index reading right now is Bozeman, MT with a reading of 5.8.
Over the next 24 hours, the highest UV Index reading in Gallatin County, MT is expected to be 5.8 in Bozeman between 4:00 PM - 5:00 PM MDT today.
| Range | 0 - 2 | 3 - 5 | 6 - 7 | 8 - 10 | 11+ |
|---|---|---|---|---|---|
| Color | |||||
| Risk | Low | Moderate | High | Very High | Extreme |