As of 10:19 AM MST on January 8, 2026, all 12 cities in Chouteau County, MT in our database have a UV Index reading of Low. The city with the highest UV Index reading right now is Loma, MT with a reading of 0.4.
Over the next 24 hours, the highest UV Index reading in Chouteau County, MT is expected to be 0.8 in Fort Benton between 1:00 PM - 2:00 PM MST today.
| Range | 0 - 2 | 3 - 5 | 6 - 7 | 8 - 10 | 11+ |
|---|---|---|---|---|---|
| Color | |||||
| Risk | Low | Moderate | High | Very High | Extreme |