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Last Updated 42 minutes ago
The hourly San Mateo, CA UV Index forecast for Friday, July 4th, 2025.
Last Updated 15 hours ago
The UV index forecast for the next five days in San Mateo, CA has no days reaching the extreme level and 3 days reaching the high or very high levels. The peak UV intensity in San Mateo over the next five days will be 9.2 on Saturday, July 5th at 2:00 pm.
The UV index forecast for Friday, July 4th in San Mateo, CA is below.
Time | UV Index | Risk |
---|---|---|
3am | 0 |
Low |
4am | 0 |
Low |
5am | 0 |
Low |
6am | 0 |
Low |
7am | 0.3 |
Low |
8am | 0.9 |
Low |
9am | 2.2 |
Low |
10am | 4.1 |
Moderate |
11am | 6.4 |
High |
12pm | 8.1 |
Very High |
1pm | 8.9 |
Very High |
2pm | 8.8 |
Very High |
3pm | 7.6 |
High |
4pm | 5.4 |
Moderate |
5pm | 3.2 |
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 5th 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 | 0.2 |
Low |
8am | 1 |
Low |
9am | 2.4 |
Low |
10am | 4.6 |
Moderate |
11am | 6.8 |
High |
12pm | 8.4 |
Very High |
1pm | 9 |
Very High |
2pm | 9.2 |
Very High |
3pm | 7.7 |
High |
4pm | 5.2 |
Moderate |
5pm | 3.1 |
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 6th 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 | 0.2 |
Low |
8am | 0.6 |
Low |
9am | 1.5 |
Low |
10am | 3.4 |
Moderate |
11am | 5.7 |
Moderate |
12pm | 7.9 |
High |
1pm | 8.8 |
Very High |
2pm | 8.2 |
Very High |
3pm | 7 |
High |
4pm | 5.1 |
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, July 7th 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 |