As of 11:01 AM MDT on October 21, 2026, all 8 cities in Mineral County, MT in our database have a UV Index reading of Low. The city with the highest UV Index reading right now is Alberton, MT with a reading of 1.2.
Over the next 24 hours, the highest UV Index reading in Mineral County, MT is expected to be 2.5 in De Borgia between 2:00 PM - 3:00 PM MDT today.
| Range | 0 - 2 | 3 - 5 | 6 - 7 | 8 - 10 | 11+ |
|---|---|---|---|---|---|
| Color | |||||
| Risk | Low | Moderate | High | Very High | Extreme |