As of 3:54 PM CDT on June 7, 2025, out of 13 cities in Sioux County, IA in our database, 11 cities (85%) have a UV Index reading of High, while 2 cities (15%) have a UV Index reading of Moderate. The city with the highest UV Index reading right now is Sioux Center, IA with a reading of 6.8.
Over the next 24 hours, the highest UV Index reading in Sioux County, IA is expected to be 7.7 in Sioux Center between 1:00 PM - 2:00 PM CDT tomorrow.
| Range | 0 - 2 | 3 - 5 | 6 - 7 | 8 - 10 | 11+ |
|---|---|---|---|---|---|
| Color | |||||
| Risk | Low | Moderate | High | Very High | Extreme |