4.8 (Moderate)
Last Updated 51 minutes ago
The hourly Millbrae, CA UV Index forecast for Tuesday, September 16th, 2025.
Last Updated 51 minutes ago
The UV index forecast for the next five days in Millbrae, CA has no days reaching the extreme level and 2 days reaching the high or very high levels. The peak UV intensity in Millbrae over the next five days will be 7.4 on Tuesday, September 16th at 1:00 pm.
The UV index forecast for Tuesday, September 16th in Millbrae, CA is below.
| Time | UV Index | Risk |
|---|---|---|
| 12pm | 6.6 |
High |
| 1pm | 7.4 |
High |
| 2pm | 6.9 |
High |
| 3pm | 5.2 |
Moderate |
| 4pm | 3.4 |
Moderate |
| 5pm | 1.6 |
Low |
| 6pm | 0.5 |
Low |
| 7pm | 0 |
Low |
| 8pm | 0 |
Low |
| 9pm | 0 |
Low |
| 10pm | 0 |
Low |
| 11pm | 0 |
Low |
The UV index forecast for Wednesday, September 17th in Millbrae, 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 | 0.3 |
Low |
| 9am | 1.2 |
Low |
| 10am | 2.9 |
Low |
| 11am | 4.9 |
Moderate |
| 12pm | 6.4 |
High |
| 1pm | 7.1 |
High |
| 2pm | 6.6 |
High |
| 3pm | 4.8 |
Moderate |
| 4pm | 3 |
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 Thursday, September 18th in Millbrae, 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 | 0.7 |
Low |
| 10am | 1.4 |
Low |
| 11am | 2.2 |
Low |
| 12pm | 3.6 |
Moderate |
| 1pm | 3.9 |
Moderate |
| 2pm | 2.4 |
Low |
| 3pm | 1.7 |
Low |
| 4pm | 0.7 |
Low |
| 5pm | 0.7 |
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 Millbrae, 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 |
Low |
| 9am | 0.2 |
Low |
| 10am | 0.4 |
Low |
| 11am | 0.7 |
Low |
| 12pm | 1 |
Low |
| 1pm | 1 |
Low |
| 2pm | 0.9 |
Low |
| 3pm | 0.6 |
Low |
| 4pm | 0.3 |
Low |
| 5pm | 0.2 |
Low |
| 6pm | 0.1 |
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 Millbrae, 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 |