UV Index for Onalaska, WI

Current Onalaska UV Index

2.9 (Low)

Last Updated 33 minutes ago

Hourly Onalaska UV Index

The hourly Onalaska, WI UV Index forecast for Saturday, August 30th, 2025.

5 Day Hourly Onalaska UV Index Forecast

Last Updated 21 hours ago

The UV index forecast for the next five days in Onalaska, WI has no days reaching the extreme level and 2 days reaching the high or very high levels. The peak UV intensity in Onalaska over the next five days will be 6.4 on Sunday, August 31st at 1:00 pm.

The UV index forecast for Saturday, August 30th in Onalaska, WI is below.

Time UV Index Risk
11am 4.5
Moderate
12pm 5.2
Moderate
1pm 6.1
High
2pm 6.3
High
3pm 5
Moderate
4pm 3.1
Moderate
5pm 0.9
Low
6pm 0.5
Low
7pm 0.1
Low
8pm 0
Low
9pm 0
Low
10pm 0
Low
11pm 0
Low

The UV index forecast for Sunday, August 31st in Onalaska, WI 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 2.8
Low
11am 4.2
Moderate
12pm 5.2
Moderate
1pm 6.4
High
2pm 5.8
Moderate
3pm 4.7
Moderate
4pm 3.2
Moderate
5pm 1.8
Low
6pm 0.6
Low
7pm 0.1
Low
8pm 0
Low
9pm 0
Low
10pm 0
Low
11pm 0
Low

The UV index forecast for Monday, September 1st in Onalaska, WI 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
Low
10am 1.7
Low
11am 3.1
Moderate
12pm 5.3
Moderate
1pm 5.9
Moderate
2pm 5.8
Moderate
3pm 4.7
Moderate
4pm 3.1
Moderate
5pm 1.6
Low
6pm 0.6
Low
7pm 0.1
Low
8pm 0
Low
9pm 0
Low
10pm 0
Low
11pm 0
Low

The UV index forecast for Tuesday, September 2nd in Onalaska, WI 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