UV Index for Upper Lake, CA

Current Upper Lake UV Index

0 (Low)

Last Updated 9 minutes ago

Hourly Upper Lake UV Index

The hourly Upper Lake, CA UV Index forecast for Wednesday, September 3rd, 2025.

5 Day Hourly Upper Lake UV Index Forecast

Last Updated 19 hours ago

The UV index forecast for the next five days in Upper Lake, CA has no days reaching the extreme level and 3 days reaching the high or very high levels. The peak UV intensity in Upper Lake over the next five days will be 7.9 on Wednesday, September 3rd at 1:00 pm.

The UV index forecast for Wednesday, September 3rd in Upper Lake, CA is below.

Time UV Index Risk
7am 0
Low
8am 0.3
Low
9am 1.1
Low
10am 2.7
Low
11am 5.2
Moderate
12pm 7.1
High
1pm 7.9
High
2pm 7
High
3pm 5.3
Moderate
4pm 3.6
Moderate
5pm 2
Low
6pm 0.7
Low
7pm 0.1
Low
8pm 0
Low
9pm 0
Low
10pm 0
Low
11pm 0
Low

The UV index forecast for Thursday, September 4th in Upper Lake, 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 0.4
Low
9am 1.3
Low
10am 2.7
Low
11am 4.8
Moderate
12pm 7
High
1pm 7.1
High
2pm 7.1
High
3pm 5.6
Moderate
4pm 4
Moderate
5pm 2.1
Low
6pm 0.7
Low
7pm 0.1
Low
8pm 0
Low
9pm 0
Low
10pm 0
Low
11pm 0
Low

The UV index forecast for Friday, September 5th in Upper Lake, 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 0.3
Low
9am 1.2
Low
10am 2.9
Low
11am 4.8
Moderate
12pm 6.5
High
1pm 7.3
High
2pm 6.9
High
3pm 5.6
Moderate
4pm 3.7
Moderate
5pm 1.8
Low
6pm 0.7
Low
7pm 0.1
Low
8pm 0
Low
9pm 0
Low
10pm 0
Low
11pm 0
Low

The UV index forecast for Saturday, September 6th in Upper Lake, 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