As of 12:31 PM CDT on August 11, 2026, out of 7 cities in Jefferson County, IA in our database, 6 cities (86%) have a UV Index reading of Low, while 1 city (14%) have a UV Index reading of Moderate. The city with the highest UV Index reading right now is Batavia, IA with a reading of 2.8.
Over the next 24 hours, the highest UV Index reading in Jefferson County, IA is expected to be 6.9 in Pleasant Plain 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 |