0.1 (Low)
Last Updated 17 minutes ago
The hourly San Jose, CA UV Index forecast for Sunday, August 31st, 2025.
Last Updated 8 hours ago
The UV index forecast for the next five days in San Jose, CA has no days reaching the extreme level and 4 days reaching the high or very high levels. The peak UV intensity in San Jose over the next five days will be 8.2 on Wednesday, September 3rd at 1:00 pm.
The UV index forecast for Sunday, August 31st in San Jose, CA is below.
| Time | UV Index | Risk |
|---|---|---|
| 8pm | 0 |
Low |
| 9pm | 0 |
Low |
| 10pm | 0 |
Low |
| 11pm | 0 |
Low |
The UV index forecast for Monday, September 1st in San Jose, 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 | 1.5 |
Low |
| 10am | 3.2 |
Moderate |
| 11am | 5.3 |
Moderate |
| 12pm | 7.1 |
High |
| 1pm | 7.9 |
High |
| 2pm | 7.5 |
High |
| 3pm | 5.9 |
Moderate |
| 4pm | 3.8 |
Moderate |
| 5pm | 1.9 |
Low |
| 6pm | 0.7 |
Low |
| 7pm | 0.1 |
Low |
| 8pm | 0 |
Low |
| 9pm | 0 |
Low |
| 10pm | 0 |
Low |
| 11pm | 0 |
Low |
The UV index forecast for Tuesday, September 2nd in San Jose, 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 | 1.4 |
Low |
| 10am | 3.1 |
Moderate |
| 11am | 5.1 |
Moderate |
| 12pm | 6.8 |
High |
| 1pm | 7.4 |
High |
| 2pm | 7.3 |
High |
| 3pm | 6 |
High |
| 4pm | 4 |
Moderate |
| 5pm | 2 |
Low |
| 6pm | 0.7 |
Low |
| 7pm | 0.1 |
Low |
| 8pm | 0 |
Low |
| 9pm | 0 |
Low |
| 10pm | 0 |
Low |
| 11pm | 0 |
Low |
The UV index forecast for Wednesday, September 3rd in San Jose, 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 | 1.5 |
Low |
| 10am | 3.5 |
Moderate |
| 11am | 5.6 |
Moderate |
| 12pm | 7.4 |
High |
| 1pm | 8.2 |
Very High |
| 2pm | 7.4 |
High |
| 3pm | 5.9 |
Moderate |
| 4pm | 4.1 |
Moderate |
| 5pm | 2.1 |
Low |
| 6pm | 0.7 |
Low |
| 7pm | 0.1 |
Low |
| 8pm | 0 |
Low |
| 9pm | 0 |
Low |
| 10pm | 0 |
Low |
| 11pm | 0 |
Low |
The UV index forecast for Thursday, September 4th in San Jose, 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 |