5.4 (Moderate)
Last Updated 6 minutes ago
The hourly Santa Rosa, CA UV Index forecast for Friday, August 15th, 2025.
Last Updated 5 minutes ago
The UV index forecast for the next five days in Santa Rosa, CA has no days reaching the extreme level and 4 days reaching the high or very high levels. The peak UV intensity in Santa Rosa over the next five days will be 9.3 on Monday, August 18th at 1:00 pm.
The UV index forecast for Friday, August 15th in Santa Rosa, CA is below.
| Time | UV Index | Risk |
|---|---|---|
| 12pm | 7 |
High |
| 1pm | 8 |
Very High |
| 2pm | 8.2 |
Very High |
| 3pm | 6.5 |
High |
| 4pm | 4.5 |
Moderate |
| 5pm | 2.6 |
Low |
| 6pm | 1.1 |
Low |
| 7pm | 0.2 |
Low |
| 8pm | 0 |
Low |
| 9pm | 0 |
Low |
| 10pm | 0 |
Low |
| 11pm | 0 |
Low |
The UV index forecast for Saturday, August 16th in Santa Rosa, 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 | 0.9 |
Low |
| 10am | 1.7 |
Low |
| 11am | 3 |
Moderate |
| 12pm | 5.1 |
Moderate |
| 1pm | 6.3 |
High |
| 2pm | 7.1 |
High |
| 3pm | 6.2 |
High |
| 4pm | 4.4 |
Moderate |
| 5pm | 2.4 |
Low |
| 6pm | 1 |
Low |
| 7pm | 0.2 |
Low |
| 8pm | 0 |
Low |
| 9pm | 0 |
Low |
| 10pm | 0 |
Low |
| 11pm | 0 |
Low |
The UV index forecast for Sunday, August 17th in Santa Rosa, 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 | 0.1 |
Low |
| 8am | 0.6 |
Low |
| 9am | 1.9 |
Low |
| 10am | 3.8 |
Moderate |
| 11am | 5.9 |
Moderate |
| 12pm | 7.4 |
High |
| 1pm | 8.3 |
Very High |
| 2pm | 8.1 |
Very High |
| 3pm | 6.5 |
High |
| 4pm | 4.7 |
Moderate |
| 5pm | 2.6 |
Low |
| 6pm | 1 |
Low |
| 7pm | 0.2 |
Low |
| 8pm | 0 |
Low |
| 9pm | 0 |
Low |
| 10pm | 0 |
Low |
| 11pm | 0 |
Low |
The UV index forecast for Monday, August 18th in Santa Rosa, 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 | 0.1 |
Low |
| 8am | 0.7 |
Low |
| 9am | 2 |
Low |
| 10am | 4 |
Moderate |
| 11am | 6.4 |
High |
| 12pm | 8.4 |
Very High |
| 1pm | 9.3 |
Very High |
| 2pm | 8.9 |
Very High |
| 3pm | 7.3 |
High |
| 4pm | 5 |
Moderate |
| 5pm | 2.7 |
Low |
| 6pm | 1.1 |
Low |
| 7pm | 0.2 |
Low |
| 8pm | 0 |
Low |
| 9pm | 0 |
Low |
| 10pm | 0 |
Low |
| 11pm | 0 |
Low |
The UV index forecast for Tuesday, August 19th in Santa Rosa, 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 |