As of 4:03 PM MDT on October 19, 2026, all 1 cities in Sioux County, NE in our database have a UV Index reading of Low. The city with the highest UV Index reading right now is Harrison, NE with a reading of 1.4.
Over the next 24 hours, the highest UV Index reading in Sioux County, NE is expected to be 4.3 in Harrison between 1:00 PM - 2:00 PM MDT tomorrow.
| Range | 0 - 2 | 3 - 5 | 6 - 7 | 8 - 10 | 11+ |
|---|---|---|---|---|---|
| Color | |||||
| Risk | Low | Moderate | High | Very High | Extreme |