As of 2:11 PM MDT on April 26, 2025, out of 2 cities in Custer County, MT in our database, 1 city (50%) have a UV Index reading of Moderate, while 1 city (50%) have a UV Index reading of High. The city with the highest UV Index reading right now is Miles City, MT with a reading of 5.6.
Over the next 24 hours, the highest UV Index reading in Custer County, MT is expected to be 6.7 in Ismay 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 |