As of 4:07 PM EDT on March 31, 2026, all 16 cities in Putnam County, OH in our database have a UV Index reading of Low. The city with the highest UV Index reading right now is Ottawa, OH with a reading of 2.3.
Over the next 24 hours, the highest UV Index reading in Putnam County, OH is expected to be 2.3 in Ottawa between 4:00 PM - 5:00 PM EDT today.
| Range | 0 - 2 | 3 - 5 | 6 - 7 | 8 - 10 | 11+ |
|---|---|---|---|---|---|
| Color | |||||
| Risk | Low | Moderate | High | Very High | Extreme |