8.4 (Very High)
Last Updated 57 minutes ago
The hourly Isla Vista, CA UV Index forecast for Wednesday, September 17th, 2025.
Last Updated 2 hours ago
The UV index forecast for the next five days in Isla Vista, CA has no days reaching the extreme level and 3 days reaching the high or very high levels. The peak UV intensity in Isla Vista over the next five days will be 8.4 on Wednesday, September 17th at 1:00 pm.
The UV index forecast for Wednesday, September 17th in Isla Vista, CA is below.
| Time | UV Index | Risk |
|---|---|---|
| 2pm | 7.6 |
High |
| 3pm | 5.3 |
Moderate |
| 4pm | 3.4 |
Moderate |
| 5pm | 1.5 |
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 Thursday, September 18th in Isla Vista, 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 | 0.2 |
Low |
| 9am | 0.4 |
Low |
| 10am | 0.6 |
Low |
| 11am | 1.2 |
Low |
| 12pm | 2 |
Low |
| 1pm | 3.6 |
Moderate |
| 2pm | 2.9 |
Low |
| 3pm | 2 |
Low |
| 4pm | 1.6 |
Low |
| 5pm | 0.5 |
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 Friday, September 19th in Isla Vista, 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 | 0.2 |
Low |
| 9am | 0.8 |
Low |
| 10am | 2.5 |
Low |
| 11am | 5.4 |
Moderate |
| 12pm | 7.2 |
High |
| 1pm | 7.9 |
High |
| 2pm | 7.3 |
High |
| 3pm | 5.6 |
Moderate |
| 4pm | 3.4 |
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 Saturday, September 20th in Isla Vista, 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 | 3.4 |
Moderate |
| 11am | 5.6 |
Moderate |
| 12pm | 7.4 |
High |
| 1pm | 8.1 |
Very High |
| 2pm | 7.4 |
High |
| 3pm | 5.6 |
Moderate |
| 4pm | 3.4 |
Moderate |
| 5pm | 1.5 |
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 Isla Vista, 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 |