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The hourly Fountain Valley, CA UV Index forecast for Tuesday, July 1st, 2025.
Last Updated 10 hours ago
The UV index forecast for the next five days in Fountain Valley, CA has 2 days reaching the extreme level and 2 days reaching the high or very high levels. The peak UV intensity in Fountain Valley over the next five days will be 11.2 on Thursday, July 3rd at 1:00 pm.
The UV index forecast for Tuesday, July 1st in Fountain Valley, CA is below.
| Time | UV Index | Risk |
|---|---|---|
| 10pm | 0 |
Low |
| 11pm | 0 |
Low |
The UV index forecast for Wednesday, July 2nd in Fountain 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 | 0.4 |
Low |
| 8am | 1.4 |
Low |
| 9am | 3.2 |
Moderate |
| 10am | 5.6 |
Moderate |
| 11am | 8 |
Very High |
| 12pm | 9.8 |
Very High |
| 1pm | 10.4 |
Very High |
| 2pm | 9.5 |
Very High |
| 3pm | 7.6 |
High |
| 4pm | 5.1 |
Moderate |
| 5pm | 2.8 |
Low |
| 6pm | 1.1 |
Low |
| 7pm | 0.3 |
Low |
| 8pm | 0 |
Low |
| 9pm | 0 |
Low |
| 10pm | 0 |
Low |
| 11pm | 0 |
Low |
The UV index forecast for Thursday, July 3rd in Fountain 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 | 0.3 |
Low |
| 8am | 1 |
Low |
| 9am | 2.6 |
Low |
| 10am | 5.5 |
Moderate |
| 11am | 8.7 |
Very High |
| 12pm | 10.6 |
Very High |
| 1pm | 11.2 |
Extreme |
| 2pm | 10.1 |
Very High |
| 3pm | 8 |
Very High |
| 4pm | 5.3 |
Moderate |
| 5pm | 2.9 |
Low |
| 6pm | 1.2 |
Low |
| 7pm | 0.3 |
Low |
| 8pm | 0 |
Low |
| 9pm | 0 |
Low |
| 10pm | 0 |
Low |
| 11pm | 0 |
Low |
The UV index forecast for Friday, July 4th in Fountain 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 | 0.4 |
Low |
| 8am | 1.5 |
Low |
| 9am | 3.5 |
Moderate |
| 10am | 6.1 |
High |
| 11am | 8.6 |
Very High |
| 12pm | 10.5 |
Very High |
| 1pm | 11 |
Extreme |
| 2pm | 10.1 |
Very High |
| 3pm | 8 |
Very High |
| 4pm | 5.4 |
Moderate |
| 5pm | 2.9 |
Low |
| 6pm | 1.2 |
Low |
| 7pm | 0.3 |
Low |
| 8pm | 0 |
Low |
| 9pm | 0 |
Low |
| 10pm | 0 |
Low |
| 11pm | 0 |
Low |
The UV index forecast for Saturday, July 5th in Fountain 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 |