UV Index for Guerneville, CA

Current Guerneville UV Index

0 (Low)

Last Updated 41 minutes ago

Hourly Guerneville UV Index

The hourly Guerneville, CA UV Index forecast for Wednesday, April 16th, 2025.

5 Day Hourly Guerneville UV Index Forecast

Last Updated 15 hours ago

The UV index forecast for the next five days in Guerneville, CA has no days reaching the extreme level and 1 day reaching the high or very high levels. The peak UV intensity in Guerneville over the next five days will be 6.8 on Friday, April 18th at 1:00 pm.

The UV index forecast for Wednesday, April 16th in Guerneville, CA is below.

Time UV Index Risk
3am 0
Low
4am 0
Low
5am 0
Low
6am 0
Low
7am 0
Low
8am 0.3
Low
9am 0.8
Low
10am 1.4
Low
11am 1.9
Low
12pm 2.9
Low
1pm 3.8
Moderate
2pm 4.2
Moderate
3pm 3.6
Moderate
4pm 2.8
Low
5pm 1.7
Low
6pm 0.7
Low
7pm 0.2
Low
8pm 0
Low
9pm 0
Low
10pm 0
Low
11pm 0
Low

The UV index forecast for Thursday, April 17th in Guerneville, 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 0.8
Low
10am 1.9
Low
11am 2.8
Low
12pm 3.4
Moderate
1pm 3.8
Moderate
2pm 3.8
Moderate
3pm 3.2
Moderate
4pm 2.8
Low
5pm 1.6
Low
6pm 0.7
Low
7pm 0.2
Low
8pm 0
Low
9pm 0
Low
10pm 0
Low
11pm 0
Low

The UV index forecast for Friday, April 18th in Guerneville, 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 0.5
Low
9am 1.4
Low
10am 3
Moderate
11am 4.6
Moderate
12pm 6.1
High
1pm 6.8
High
2pm 6.6
High
3pm 5.4
Moderate
4pm 3.8
Moderate
5pm 2.1
Low
6pm 0.8
Low
7pm 0.2
Low
8pm 0
Low
9pm 0
Low
10pm 0
Low
11pm 0
Low

The UV index forecast for Saturday, April 19th in Guerneville, 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