As of 11:55 AM EST on November 8, 2026, all 4 cities in Defiance County, OH in our database have a UV Index reading of Low. The city with the highest UV Index reading right now is Defiance, OH with a reading of 1.9.
Over the next 24 hours, the highest UV Index reading in Defiance County, OH is expected to be 2.5 in Defiance between 12:00 PM - 1:00 PM EST today.
| Range | 0 - 2 | 3 - 5 | 6 - 7 | 8 - 10 | 11+ |
|---|---|---|---|---|---|
| Color | |||||
| Risk | Low | Moderate | High | Very High | Extreme |