As of 4:45 PM CDT on May 18, 2026, out of 19 cities in Polk County, IA in our database, 11 cities (58%) have a UV Index reading of Low, while 8 cities (42%) have a UV Index reading of Moderate. The city with the highest UV Index reading right now is Des Moines, IA with a reading of 5.1.
Over the next 24 hours, the highest UV Index reading in Polk County, IA is expected to be 8.6 in Urbandale between 2:00 PM - 3:00 PM CDT tomorrow.
| Range | 0 - 2 | 3 - 5 | 6 - 7 | 8 - 10 | 11+ |
|---|---|---|---|---|---|
| Color | |||||
| Risk | Low | Moderate | High | Very High | Extreme |