As of 2:21 PM MDT on April 19, 2026, out of 15 cities in Carbon County, MT in our database, 13 cities (87%) have a UV Index reading of High, while 2 cities (13%) have a UV Index reading of Very High. The city with the highest UV Index reading right now is Luther, MT with a reading of 7.9.
Over the next 24 hours, the highest UV Index reading in Carbon County, MT is expected to be 7.9 in Luther 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 |