As of 2:20 PM MDT on September 16, 2025, out of 11 cities in Blaine County, MT in our database, 7 cities (64%) have a UV Index reading of Moderate, while 4 cities (36%) have a UV Index reading of Low. The city with the highest UV Index reading right now is Hartland Colony, MT with a reading of 4.6.
Over the next 24 hours, the highest UV Index reading in Blaine County, MT is expected to be 5.1 in Hays 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 |