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The hourly Alto, CA UV Index forecast for Saturday, May 17th, 2025.
Last Updated 18 hours ago
The UV index forecast for the next five days in Alto, CA has no days reaching the extreme level and 3 days reaching the high or very high levels. The peak UV intensity in Alto over the next five days will be 9.3 on Monday, May 19th at 1:00 pm.
The UV index forecast for Saturday, May 17th in Alto, CA is below.
Time | UV Index | Risk |
---|---|---|
6am | 0 |
Low |
7am | 0.1 |
Low |
8am | 0.4 |
Low |
9am | 1.7 |
Low |
10am | 3.4 |
Moderate |
11am | 5.8 |
Moderate |
12pm | 6.8 |
High |
1pm | 7.9 |
High |
2pm | 7.8 |
High |
3pm | 6.1 |
High |
4pm | 4.6 |
Moderate |
5pm | 2.8 |
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 18th in Alto, 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 | 2.2 |
Low |
10am | 4.2 |
Moderate |
11am | 6.3 |
High |
12pm | 8.1 |
Very High |
1pm | 9 |
Very High |
2pm | 8.7 |
Very High |
3pm | 7.2 |
High |
4pm | 5.2 |
Moderate |
5pm | 3 |
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 Monday, May 19th in Alto, 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 | 6.7 |
High |
12pm | 8.4 |
Very High |
1pm | 9.3 |
Very High |
2pm | 9 |
Very High |
3pm | 7.5 |
High |
4pm | 5.3 |
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 Tuesday, May 20th in Alto, 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 |