As of 11:28 AM MDT on May 18, 2026, all 4 cities in McCone County, MT in our database have a UV Index reading of Low. The city with the highest UV Index reading right now is Circle, MT with a reading of 1.7.
Over the next 24 hours, the highest UV Index reading in McCone County, MT is expected to be 3.7 in Circle between 10:00 AM - 11:00 AM MDT tomorrow.
| Range | 0 - 2 | 3 - 5 | 6 - 7 | 8 - 10 | 11+ |
|---|---|---|---|---|---|
| Color | |||||
| Risk | Low | Moderate | High | Very High | Extreme |