UV Index for San Mateo, CA

Current San Mateo UV Index

0 (Low)

Last Updated 2 minutes ago

Hourly San Mateo UV Index

The hourly San Mateo, CA UV Index forecast for Wednesday, March 26th, 2025.

5 Day Hourly San Mateo UV Index Forecast

Last Updated 18 hours ago

The UV index forecast for the next five days in San Mateo, CA has no days reaching the extreme level and 1 day reaching the high or very high levels. The peak UV intensity in San Mateo over the next five days will be 6 on Thursday, March 27th at 1:00 pm.

The UV index forecast for Wednesday, March 26th in San Mateo, CA is below.

Time UV Index Risk
6am 0
Low
7am 0
Low
8am 0.3
Low
9am 1
Low
10am 2.4
Low
11am 4.1
Moderate
12pm 5.4
Moderate
1pm 5.9
Moderate
2pm 5
Moderate
3pm 3.5
Moderate
4pm 2
Low
5pm 1
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, March 27th 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
Low
8am 0.1
Low
9am 0.4
Low
10am 1.1
Low
11am 3.5
Moderate
12pm 5.4
Moderate
1pm 6
High
2pm 5.8
Moderate
3pm 4.6
Moderate
4pm 3
Moderate
5pm 1.5
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 Friday, March 28th 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
Low
8am 0.2
Low
9am 1
Low
10am 2.3
Low
11am 3.8
Moderate
12pm 5
Moderate
1pm 4.4
Moderate
2pm 2.4
Low
3pm 3.1
Moderate
4pm 2.9
Low
5pm 1.5
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 Saturday, March 29th 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