As of 3:50 PM CDT on May 10, 2026, all 5 cities in Sioux County, ND in our database have a UV Index reading of High. The city with the highest UV Index reading right now is Selfridge, ND with a reading of 6.2.
Over the next 24 hours, the highest UV Index reading in Sioux County, ND is expected to be 6.2 in Selfridge between 3:00 PM - 4:00 PM CDT today.
| Range | 0 - 2 | 3 - 5 | 6 - 7 | 8 - 10 | 11+ |
|---|---|---|---|---|---|
| Color | |||||
| Risk | Low | Moderate | High | Very High | Extreme |