As of 1:03 PM CDT on September 16, 2026, out of 19 cities in Polk County, IA in our database, 18 cities (95%) have a UV Index reading of High, while 1 city (5%) have a UV Index reading of Moderate. The city with the highest UV Index reading right now is Ankeny, IA with a reading of 6.4.
Over the next 24 hours, the highest UV Index reading in Polk County, IA is expected to be 6.4 in Ankeny between 1:00 PM - 2:00 PM CDT today.
| Range | 0 - 2 | 3 - 5 | 6 - 7 | 8 - 10 | 11+ |
|---|---|---|---|---|---|
| Color | |||||
| Risk | Low | Moderate | High | Very High | Extreme |