As of 11:34 AM CDT on June 28, 2025, all 9 cities in Jefferson County, NE in our database have a UV Index reading of High. The city with the highest UV Index reading right now is Fairbury, NE with a reading of 6.4.
Over the next 24 hours, the highest UV Index reading in Jefferson County, NE is expected to be 9.9 in Diller 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 |