6.1 (High)
Last Updated 15 minutes ago
The hourly St. Clair, OH UV Index forecast for Wednesday, September 17th, 2025.
Last Updated 14 minutes ago
The UV index forecast for the next five days in St. Clair, OH has no days reaching the extreme level and 4 days reaching the high or very high levels. The peak UV intensity in St. Clair over the next five days will be 6.3 on Thursday, September 18th at 1:00 pm.
The UV index forecast for Wednesday, September 17th in St. Clair, OH is below.
| Time | UV Index | Risk |
|---|---|---|
| 3pm | 5 |
Moderate |
| 4pm | 3.4 |
Moderate |
| 5pm | 1.7 |
Low |
| 6pm | 0.6 |
Low |
| 7pm | 0.1 |
Low |
| 8pm | 0 |
Low |
| 9pm | 0 |
Low |
| 10pm | 0 |
Low |
| 11pm | 0 |
Low |
The UV index forecast for Thursday, September 18th in St. Clair, OH is below.
| Time | UV Index | Risk |
|---|---|---|
| 12am | 0 |
Low |
| 1am | 0 |
Low |
| 2am | 0 |
Low |
| 3am | 0 |
Low |
| 4am | 0 |
Low |
| 5am | 0 |
Low |
| 6am | 0 |
Low |
| 7am | 0 |
Low |
| 8am | 0.2 |
Low |
| 9am | 0.8 |
Low |
| 10am | 2 |
Low |
| 11am | 3.8 |
Moderate |
| 12pm | 5.4 |
Moderate |
| 1pm | 6.3 |
High |
| 2pm | 6.2 |
High |
| 3pm | 5.1 |
Moderate |
| 4pm | 3.4 |
Moderate |
| 5pm | 1.8 |
Low |
| 6pm | 0.6 |
Low |
| 7pm | 0 |
Low |
| 8pm | 0 |
Low |
| 9pm | 0 |
Low |
| 10pm | 0 |
Low |
| 11pm | 0 |
Low |
The UV index forecast for Friday, September 19th in St. Clair, OH is below.
| Time | UV Index | Risk |
|---|---|---|
| 12am | 0 |
Low |
| 1am | 0 |
Low |
| 2am | 0 |
Low |
| 3am | 0 |
Low |
| 4am | 0 |
Low |
| 5am | 0 |
Low |
| 6am | 0 |
Low |
| 7am | 0 |
Low |
| 8am | 0.2 |
Low |
| 9am | 0.8 |
Low |
| 10am | 2 |
Low |
| 11am | 3.6 |
Moderate |
| 12pm | 5.2 |
Moderate |
| 1pm | 6.1 |
High |
| 2pm | 6 |
High |
| 3pm | 4.9 |
Moderate |
| 4pm | 3.3 |
Moderate |
| 5pm | 1.7 |
Low |
| 6pm | 0.6 |
Low |
| 7pm | 0 |
Low |
| 8pm | 0 |
Low |
| 9pm | 0 |
Low |
| 10pm | 0 |
Low |
| 11pm | 0 |
Low |
The UV index forecast for Saturday, September 20th in St. Clair, OH is below.
| Time | UV Index | Risk |
|---|---|---|
| 12am | 0 |
Low |
| 1am | 0 |
Low |
| 2am | 0 |
Low |
| 3am | 0 |
Low |
| 4am | 0 |
Low |
| 5am | 0 |
Low |
| 6am | 0 |
Low |
| 7am | 0 |
Low |
| 8am | 0.2 |
Low |
| 9am | 0.8 |
Low |
| 10am | 2 |
Low |
| 11am | 3.7 |
Moderate |
| 12pm | 4.9 |
Moderate |
| 1pm | 6 |
High |
| 2pm | 5.8 |
Moderate |
| 3pm | 4.8 |
Moderate |
| 4pm | 3.2 |
Moderate |
| 5pm | 1.5 |
Low |
| 6pm | 0.2 |
Low |
| 7pm | 0 |
Low |
| 8pm | 0 |
Low |
| 9pm | 0 |
Low |
| 10pm | 0 |
Low |
| 11pm | 0 |
Low |
The UV index forecast for Sunday, September 21st in St. Clair, OH is below.
| Time | UV Index | Risk |
|---|---|---|
| 12am | 0 |
Low |
| 1am | 0 |
Low |
| 2am | 0 |
Low |
| 3am | 0 |
Low |
| 4am | 0 |
Low |
| 5am | 0 |
Low |
| 6am | 0 |
Low |
| 7am | 0 |
Low |
| 8am | 0.2 |
Low |