UV Index for Yountville, CA

Current Yountville UV Index

0 (Low)

Last Updated 1 minute ago

Hourly Yountville UV Index

The hourly Yountville, CA UV Index forecast for Saturday, July 12th, 2025.

5 Day Hourly Yountville UV Index Forecast

Last Updated 14 hours ago

The UV index forecast for the next five days in Yountville, CA has no days reaching the extreme level and 3 days reaching the high or very high levels. The peak UV intensity in Yountville over the next five days will be 10.9 on Sunday, July 13th at 1:00 pm.

The UV index forecast for Saturday, July 12th in Yountville, CA is below.

Time UV Index Risk
2am 0
Low
3am 0
Low
4am 0
Low
5am 0
Low
6am 0
Low
7am 0.3
Low
8am 1.1
Low
9am 2.8
Low
10am 5.2
Moderate
11am 7.8
High
12pm 9.9
Very High
1pm 10.8
Very High
2pm 10.3
Very High
3pm 8.6
Very High
4pm 6.1
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 Sunday, July 13th in Yountville, 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 0.3
Low
8am 1.2
Low
9am 2.8
Low
10am 5.2
Moderate
11am 7.9
High
12pm 10
Very High
1pm 10.9
Very High
2pm 10.4
Very High
3pm 8.6
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 Monday, July 14th in Yountville, 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 0.3
Low
8am 1.2
Low
9am 2.8
Low
10am 5.2
Moderate
11am 7.7
High
12pm 9.7
Very High
1pm 10.6
Very High
2pm 10.2
Very High
3pm 8.5
Very High
4pm 6
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 Tuesday, July 15th in Yountville, 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