UV Index for Portola, CA

Current Portola UV Index

5.9 (Moderate)

Last Updated 48 minutes ago

Hourly Portola UV Index

The hourly Portola, CA UV Index forecast for Wednesday, July 9th, 2025.

5 Day Hourly Portola UV Index Forecast

Last Updated 23 hours ago

The UV index forecast for the next five days in Portola, CA has 3 days reaching the extreme level and no days reaching the high or very high levels. The peak UV intensity in Portola over the next five days will be 12.1 on Friday, July 11th at 1:00 pm.

The UV index forecast for Wednesday, July 9th in Portola, CA is below.

Time UV Index Risk
11am 8.4
Very High
12pm 10.5
Very High
1pm 11.2
Extreme
2pm 10.7
Very High
3pm 8.8
Very High
4pm 6.2
High
5pm 3.6
Moderate
6pm 1.6
Low
7pm 0.5
Low
8pm 0
Low
9pm 0
Low
10pm 0
Low
11pm 0
Low

The UV index forecast for Thursday, July 10th in Portola, 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 0.5
Low
8am 1.6
Low
9am 3.6
Moderate
10am 6.2
High
11am 9
Very High
12pm 11.1
Extreme
1pm 11.9
Extreme
2pm 11.3
Extreme
3pm 9.3
Very High
4pm 6.5
High
5pm 3.8
Moderate
6pm 1.7
Low
7pm 0.5
Low
8pm 0
Low
9pm 0
Low
10pm 0
Low
11pm 0
Low

The UV index forecast for Friday, July 11th in Portola, 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 0.5
Low
8am 1.6
Low
9am 3.6
Moderate
10am 6.4
High
11am 9.2
Very High
12pm 11.3
Extreme
1pm 12.1
Extreme
2pm 11.4
Extreme
3pm 9.4
Very High
4pm 6.6
High
5pm 3.8
Moderate
6pm 1.7
Low
7pm 0.5
Low
8pm 0
Low
9pm 0
Low
10pm 0
Low
11pm 0
Low

The UV index forecast for Saturday, July 12th in Portola, 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
9am 3.6
Moderate