UV Index for Vallejo, CA

Current Vallejo UV Index

0.5 (Low)

Last Updated 16 minutes ago

Hourly Vallejo UV Index

The hourly Vallejo, CA UV Index forecast for Saturday, December 27th, 2025.

5 Day Hourly Vallejo UV Index Forecast

Last Updated 5 hours ago

The UV index forecast for the next five days in Vallejo, CA has no days reaching the extreme level and no days reaching the high or very high levels. The peak UV intensity in Vallejo over the next five days will be 2.1 on Tuesday, December 30th at 12:00 pm.

The UV index forecast for Saturday, December 27th in Vallejo, CA is below.

Time UV Index Risk
4pm 0.2
Low
5pm 0
Low
6pm 0
Low
7pm 0
Low
8pm 0
Low
9pm 0
Low
10pm 0
Low
11pm 0
Low

The UV index forecast for Sunday, December 28th in Vallejo, 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
Low
11am 1.5
Low
12pm 1.8
Low
1pm 1.7
Low
2pm 1.2
Low
3pm 0.6
Low
4pm 0.2
Low
5pm 0
Low
6pm 0
Low
7pm 0
Low
8pm 0
Low
9pm 0
Low
10pm 0
Low
11pm 0
Low

The UV index forecast for Monday, December 29th in Vallejo, 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 0.5
Low
10am 1.1
Low
11am 1.7
Low
12pm 2
Low
1pm 1.9
Low
2pm 1.4
Low
3pm 0.7
Low
4pm 0.2
Low
5pm 0
Low
6pm 0
Low
7pm 0
Low
8pm 0
Low
9pm 0
Low
10pm 0
Low
11pm 0
Low

The UV index forecast for Tuesday, December 30th in Vallejo, 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 0.5
Low
10am 1.2
Low
11am 1.8
Low
12pm 2.1
Low
1pm 2
Low
2pm 1.4
Low
3pm 0.7
Low
4pm 0.2
Low
5pm 0
Low
6pm 0
Low
7pm 0
Low
8pm 0
Low
9pm 0
Low
10pm 0
Low
11pm 0
Low

The UV index forecast for Wednesday, December 31st in Vallejo, CA is below.

Time UV Index Risk
12am 0
Low
1am 0
Low
2am 0
Low
3am 0
Low
4am 0
Low