As of 11:14 AM CDT on September 21, 2025, all 7 cities in Mountrail County, ND in our database have a UV Index reading of Low. The city with the highest UV Index reading right now is New Town, ND with a reading of 2.3.
Over the next 24 hours, the highest UV Index reading in Mountrail County, ND is expected to be 4.8 in New Town between 2:00 PM - 3:00 PM CDT today.
| Range | 0 - 2 | 3 - 5 | 6 - 7 | 8 - 10 | 11+ |
|---|---|---|---|---|---|
| Color | |||||
| Risk | Low | Moderate | High | Very High | Extreme |