8.6 (Very High)
Last Updated 39 minutes ago
The hourly Foster City, CA UV Index forecast for Saturday, July 5th, 2025.
Last Updated 1 hour ago
The UV index forecast for the next five days in Foster City, CA has no days reaching the extreme level and 4 days reaching the high or very high levels. The peak UV intensity in Foster City over the next five days will be 9.9 on Tuesday, July 8th at 1:00 pm.
The UV index forecast for Saturday, July 5th in Foster City, CA is below.
| Time | UV Index | Risk |
|---|---|---|
| 1pm | 9.8 |
Very High |
| 2pm | 9.5 |
Very High |
| 3pm | 7.7 |
High |
| 4pm | 5.2 |
Moderate |
| 5pm | 3.1 |
Moderate |
| 6pm | 1.4 |
Low |
| 7pm | 0.4 |
Low |
| 8pm | 0 |
Low |
| 9pm | 0 |
Low |
| 10pm | 0 |
Low |
| 11pm | 0 |
Low |
The UV index forecast for Sunday, July 6th in Foster City, 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 | 0.2 |
Low |
| 8am | 0.8 |
Low |
| 9am | 1.9 |
Low |
| 10am | 3.6 |
Moderate |
| 11am | 5.7 |
Moderate |
| 12pm | 6.6 |
High |
| 1pm | 7.2 |
High |
| 2pm | 7.4 |
High |
| 3pm | 6.2 |
High |
| 4pm | 4.5 |
Moderate |
| 5pm | 2.6 |
Low |
| 6pm | 1.3 |
Low |
| 7pm | 0.4 |
Low |
| 8pm | 0 |
Low |
| 9pm | 0 |
Low |
| 10pm | 0 |
Low |
| 11pm | 0 |
Low |
The UV index forecast for Monday, July 7th in Foster City, 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 | 0.2 |
Low |
| 8am | 0.8 |
Low |
| 9am | 2.2 |
Low |
| 10am | 4.2 |
Moderate |
| 11am | 6.4 |
High |
| 12pm | 8.3 |
Very High |
| 1pm | 9 |
Very High |
| 2pm | 8.8 |
Very High |
| 3pm | 7.7 |
High |
| 4pm | 5.5 |
Moderate |
| 5pm | 3.2 |
Moderate |
| 6pm | 1.5 |
Low |
| 7pm | 0.5 |
Low |
| 8pm | 0 |
Low |
| 9pm | 0 |
Low |
| 10pm | 0 |
Low |
| 11pm | 0 |
Low |
The UV index forecast for Tuesday, July 8th in Foster City, 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 | 1.1 |
Low |
| 9am | 2.7 |
Low |
| 10am | 4.9 |
Moderate |
| 11am | 7.2 |
High |
| 12pm | 9 |
Very High |
| 1pm | 9.9 |
Very High |
| 2pm | 9.5 |
Very High |
| 3pm | 7.9 |
High |
| 4pm | 5.7 |
Moderate |
| 5pm | 3.3 |
Moderate |
| 6pm | 1.5 |
Low |
| 7pm | 0.5 |
Low |
| 8pm | 0 |
Low |
| 9pm | 0 |
Low |
| 10pm | 0 |
Low |
| 11pm | 0 |
Low |
The UV index forecast for Wednesday, July 9th in Foster City, 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 |