As of 4:35 PM CDT on September 17, 2025, out of 9 cities in Mahaska County, IA in our database, 5 cities (56%) have a UV Index reading of Moderate, while 4 cities (44%) have a UV Index reading of Low. The city with the highest UV Index reading right now is Barnes City, IA with a reading of 2.9.
Over the next 24 hours, the highest UV Index reading in Mahaska County, IA is expected to be 5.7 in Barnes City 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 |