5.8 (Moderate)
Last Updated 32 minutes ago
The hourly Port Costa, CA UV Index forecast for Friday, July 18th, 2025.
Last Updated 5 hours ago
The UV index forecast for the next five days in Port Costa, CA has no days reaching the extreme level and 4 days reaching the high or very high levels. The peak UV intensity in Port Costa over the next five days will be 10.3 on Saturday, July 19th at 1:00 pm.
The UV index forecast for Friday, July 18th in Port Costa, CA is below.
| Time | UV Index | Risk |
|---|---|---|
| 5pm | 3.4 |
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 Saturday, July 19th in Port Costa, 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 | 7.4 |
High |
| 12pm | 9.4 |
Very High |
| 1pm | 10.3 |
Very High |
| 2pm | 9.8 |
Very High |
| 3pm | 8.1 |
Very High |
| 4pm | 5.7 |
Moderate |
| 5pm | 3.4 |
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 Sunday, July 20th in Port Costa, 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 | 4.9 |
Moderate |
| 11am | 7.4 |
High |
| 12pm | 9.4 |
Very High |
| 1pm | 10.2 |
Very High |
| 2pm | 9.8 |
Very High |
| 3pm | 8.2 |
Very High |
| 4pm | 5.8 |
Moderate |
| 5pm | 3.4 |
Moderate |
| 6pm | 1.5 |
Low |
| 7pm | 0.4 |
Low |
| 8pm | 0 |
Low |
| 9pm | 0 |
Low |
| 10pm | 0 |
Low |
| 11pm | 0 |
Low |
The UV index forecast for Monday, July 21st in Port Costa, 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 | 0.7 |
Low |
| 9am | 1.7 |
Low |
| 10am | 3.8 |
Moderate |
| 11am | 6.9 |
High |
| 12pm | 8.9 |
Very High |
| 1pm | 9.9 |
Very High |
| 2pm | 9.8 |
Very High |
| 3pm | 8.1 |
Very High |
| 4pm | 5.7 |
Moderate |
| 5pm | 3.3 |
Moderate |
| 6pm | 1.5 |
Low |
| 7pm | 0.4 |
Low |
| 8pm | 0 |
Low |
| 9pm | 0 |
Low |
| 10pm | 0 |
Low |
| 11pm | 0 |
Low |
The UV index forecast for Tuesday, July 22nd in Port Costa, 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 |