As of 1:37 PM CST on January 18, 2026, all 16 cities in Woodbury County, IA in our database have a UV Index reading of Low. The city with the highest UV Index reading right now is Sloan, IA with a reading of 1.4.
Over the next 24 hours, the highest UV Index reading in Woodbury County, IA is expected to be 1.4 in Sloan between 1:00 PM - 2:00 PM CST today.
| Range | 0 - 2 | 3 - 5 | 6 - 7 | 8 - 10 | 11+ |
|---|---|---|---|---|---|
| Color | |||||
| Risk | Low | Moderate | High | Very High | Extreme |