As of 3:59 PM EDT on June 8, 2025, all 4 cities in Defiance County, OH in our database have a UV Index reading of High. The city with the highest UV Index reading right now is Defiance, OH with a reading of 7.1.
Over the next 24 hours, the highest UV Index reading in Defiance County, OH is expected to be 7.6 in Defiance between 2:00 PM - 3:00 PM EDT tomorrow.
| Range | 0 - 2 | 3 - 5 | 6 - 7 | 8 - 10 | 11+ |
|---|---|---|---|---|---|
| Color | |||||
| Risk | Low | Moderate | High | Very High | Extreme |