0 (Low)
Last Updated 32 minutes ago
The hourly Santa Rosa Valley, CA UV Index forecast for Wednesday, September 17th, 2025.
Last Updated 10 hours ago
The UV index forecast for the next five days in Santa Rosa Valley, CA has no days reaching the extreme level and 3 days reaching the high or very high levels. The peak UV intensity in Santa Rosa Valley over the next five days will be 8.2 on Saturday, September 20th at 1:00 pm.
The UV index forecast for Wednesday, September 17th in Santa Rosa Valley, CA is below.
| Time | UV Index | Risk |
|---|---|---|
| 10pm | 0 |
Low |
| 11pm | 0 |
Low |
The UV index forecast for Thursday, September 18th in Santa Rosa Valley, CA 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 | 0.3 |
Low |
| 9am | 0.6 |
Low |
| 10am | 3.1 |
Moderate |
| 11am | 4.7 |
Moderate |
| 12pm | 5.2 |
Moderate |
| 1pm | 4.7 |
Moderate |
| 2pm | 3.8 |
Moderate |
| 3pm | 2 |
Low |
| 4pm | 0.6 |
Low |
| 5pm | 0.8 |
Low |
| 6pm | 0.1 |
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 Santa Rosa Valley, CA 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 | 0.4 |
Low |
| 9am | 1.3 |
Low |
| 10am | 3.1 |
Moderate |
| 11am | 5.4 |
Moderate |
| 12pm | 7.4 |
High |
| 1pm | 8 |
Very High |
| 2pm | 7.3 |
High |
| 3pm | 5.5 |
Moderate |
| 4pm | 3.3 |
Moderate |
| 5pm | 1.3 |
Low |
| 6pm | 0.3 |
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 Santa Rosa Valley, CA 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 | 0.4 |
Low |
| 9am | 1.6 |
Low |
| 10am | 3.5 |
Moderate |
| 11am | 5.8 |
Moderate |
| 12pm | 7.6 |
High |
| 1pm | 8.2 |
Very High |
| 2pm | 7.3 |
High |
| 3pm | 5.4 |
Moderate |
| 4pm | 3.3 |
Moderate |
| 5pm | 1.4 |
Low |
| 6pm | 0.4 |
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 Santa Rosa Valley, CA is below.
| Time | UV Index | Risk |
|---|---|---|
| 12am | 0 |
Low |
| 1am | 0 |
Low |
| 2am | 0 |
Low |
| 3am | 0 |
Low |
| 4am | 0 |
Low |
| 5am | 0 |
Low |