As of 12:18 AM EDT on August 20, 2026, all 16 cities in Putnam County, OH in our database have a UV Index reading of 0, indicating no radiation from the sun.
Over the next 24 hours, the highest UV Index reading in Putnam County, OH is expected to be 7.3 in Ottawa between 2:00 PM - 3:00 PM EDT today.
| Range | 0 - 2 | 3 - 5 | 6 - 7 | 8 - 10 | 11+ |
|---|---|---|---|---|---|
| Color | |||||
| Risk | Low | Moderate | High | Very High | Extreme |