As of 9:39 PM EDT on March 31, 2026, all 11 cities in Ottawa 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 Ottawa County, OH is expected to be 2 in Marblehead between 11:00 AM - 12:00 PM EDT tomorrow.
| Range | 0 - 2 | 3 - 5 | 6 - 7 | 8 - 10 | 11+ |
|---|---|---|---|---|---|
| Color | |||||
| Risk | Low | Moderate | High | Very High | Extreme |