As of 11:02 AM CDT on September 3, 2026, out of 12 cities in Harrison County, IA in our database, 7 cities (58%) have a UV Index reading of Low, while 5 cities (42%) have a UV Index reading of Moderate. The city with the highest UV Index reading right now is Dunlap, IA with a reading of 5.
Over the next 24 hours, the highest UV Index reading in Harrison County, IA is expected to be 7.7 in Missouri Valley 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 |