0.2 (Low)
Last Updated 46 minutes ago
The hourly San Mateo, CA UV Index forecast for Friday, December 26th, 2025.
Last Updated 1 day ago
The UV index forecast for the next five days in San Mateo, CA has no days reaching the extreme level and no days reaching the high or very high levels. The peak UV intensity in San Mateo over the next five days will be 1.8 on Sunday, December 28th at 1:00 pm.
The UV index forecast for Friday, December 26th in San Mateo, CA is below.
| Time | UV Index | Risk |
|---|---|---|
| 4pm | 0 |
Low |
| 5pm | 0 |
Low |
| 6pm | 0 |
Low |
| 7pm | 0 |
Low |
| 8pm | 0 |
Low |
| 9pm | 0 |
Low |
| 10pm | 0 |
Low |
| 11pm | 0 |
Low |
The UV index forecast for Saturday, December 27th in San Mateo, 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 | 0.1 |
Low |
| 9am | 0.3 |
Low |
| 10am | 0.6 |
Low |
| 11am | 1 |
Low |
| 12pm | 1.3 |
Low |
| 1pm | 1.5 |
Low |
| 2pm | 1.2 |
Low |
| 3pm | 0.6 |
Low |
| 4pm | 0.2 |
Low |
| 5pm | 0 |
Low |
| 6pm | 0 |
Low |
| 7pm | 0 |
Low |
| 8pm | 0 |
Low |
| 9pm | 0 |
Low |
| 10pm | 0 |
Low |
| 11pm | 0 |
Low |
The UV index forecast for Sunday, December 28th in San Mateo, 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 | 0.1 |
Low |
| 9am | 0.4 |
Low |
| 10am | 1 |
Low |
| 11am | 1.4 |
Low |
| 12pm | 1.7 |
Low |
| 1pm | 1.8 |
Low |
| 2pm | 1.2 |
Low |
| 3pm | 0.6 |
Low |
| 4pm | 0.2 |
Low |
| 5pm | 0 |
Low |
| 6pm | 0 |
Low |
| 7pm | 0 |
Low |
| 8pm | 0 |
Low |
| 9pm | 0 |
Low |
| 10pm | 0 |
Low |
| 11pm | 0 |
Low |
The UV index forecast for Monday, December 29th in San Mateo, CA is below.
| Time | UV Index | Risk |
|---|---|---|
| 12am | 0 |
Low |
| 1am | 0 |
Low |
| 2am | 0 |
Low |
| 3am | 0 |
Low |
| 4am | 0 |
Low |