0.2 (Low)
Last Updated 5 minutes ago
The hourly Castro Valley, CA UV Index forecast for Friday, May 23rd, 2025.
Last Updated 20 hours ago
The UV index forecast for the next five days in Castro Valley, CA has no days reaching the extreme level and 3 days reaching the high or very high levels. The peak UV intensity in Castro Valley over the next five days will be 8.4 on Saturday, May 24th at 1:00 pm.
The UV index forecast for Friday, May 23rd in Castro Valley, CA is below.
Time | UV Index | Risk |
---|---|---|
8am | 0.6 |
Low |
9am | 1.2 |
Low |
10am | 2.4 |
Low |
11am | 4.4 |
Moderate |
12pm | 5.9 |
Moderate |
1pm | 6.9 |
High |
2pm | 6.4 |
High |
3pm | 5.1 |
Moderate |
4pm | 3.3 |
Moderate |
5pm | 1.9 |
Low |
6pm | 0.8 |
Low |
7pm | 0.2 |
Low |
8pm | 0 |
Low |
9pm | 0 |
Low |
10pm | 0 |
Low |
11pm | 0 |
Low |
The UV index forecast for Saturday, May 24th in Castro 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 | 0.1 |
Low |
8am | 0.4 |
Low |
9am | 1.3 |
Low |
10am | 2.5 |
Low |
11am | 4.6 |
Moderate |
12pm | 6.8 |
High |
1pm | 8.4 |
Very High |
2pm | 7.8 |
High |
3pm | 6.7 |
High |
4pm | 4.8 |
Moderate |
5pm | 2.7 |
Low |
6pm | 1.2 |
Low |
7pm | 0.4 |
Low |
8pm | 0 |
Low |
9pm | 0 |
Low |
10pm | 0 |
Low |
11pm | 0 |
Low |
The UV index forecast for Sunday, May 25th in Castro 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 | 0.2 |
Low |
8am | 0.9 |
Low |
9am | 2.4 |
Low |
10am | 4.4 |
Moderate |
11am | 6.5 |
High |
12pm | 7.6 |
High |
1pm | 8.2 |
Very High |
2pm | 8 |
Very High |
3pm | 6.6 |
High |
4pm | 4.6 |
Moderate |
5pm | 2.7 |
Low |
6pm | 1.2 |
Low |
7pm | 0.4 |
Low |
8pm | 0 |
Low |
9pm | 0 |
Low |
10pm | 0 |
Low |
11pm | 0 |
Low |
The UV index forecast for Monday, May 26th in Castro 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 |