As of 3:08 PM MDT on June 14, 2026, out of 18 cities in Lewis and Clark County, MT in our database, 17 cities (94%) have a UV Index reading of High, while 1 city (6%) have a UV Index reading of Very High. The city with the highest UV Index reading right now is Rimini, MT with a reading of 7.6.
Over the next 24 hours, the highest UV Index reading in Lewis and Clark County, MT is expected to be 8.3 in Lincoln between 2:00 PM - 3:00 PM MDT tomorrow.
| Range | 0 - 2 | 3 - 5 | 6 - 7 | 8 - 10 | 11+ |
|---|---|---|---|---|---|
| Color | |||||
| Risk | Low | Moderate | High | Very High | Extreme |