UV Index for Grantsburg, WI

Current Grantsburg UV Index

0 (Low)

Last Updated 10 minutes ago

Hourly Grantsburg UV Index

The hourly Grantsburg, WI UV Index forecast for Friday, July 18th, 2025.

5 Day Hourly Grantsburg UV Index Forecast

Last Updated 16 hours ago

The UV index forecast for the next five days in Grantsburg, WI has no days reaching the extreme level and 2 days reaching the high or very high levels. The peak UV intensity in Grantsburg over the next five days will be 7 on Sunday, July 20th at 12:00 pm.

The UV index forecast for Friday, July 18th in Grantsburg, WI is below.

Time UV Index Risk
6am 0
Low
7am 0.2
Low
8am 0.9
Low
9am 2.1
Low
10am 3.1
Moderate
11am 2.2
Low
12pm 2
Low
1pm 3
Moderate
2pm 4.9
Moderate
3pm 6.1
High
4pm 2.6
Low
5pm 1
Low
6pm 0.3
Low
7pm 0
Low
8pm 0.1
Low
9pm 0
Low
10pm 0
Low
11pm 0
Low

The UV index forecast for Saturday, July 19th in Grantsburg, 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 0.2
Low
8am 0.2
Low
9am 0.4
Low
10am 1
Low
11am 1.4
Low
12pm 2.6
Low
1pm 3.5
Moderate
2pm 3
Moderate
3pm 4.1
Moderate
4pm 2.6
Low
5pm 3.1
Moderate
6pm 1.3
Low
7pm 0.4
Low
8pm 0.1
Low
9pm 0
Low
10pm 0
Low
11pm 0
Low

The UV index forecast for Sunday, July 20th in Grantsburg, 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 0.4
Low
8am 1.1
Low
9am 2.4
Low
10am 3.9
Moderate
11am 6.1
High
12pm 7
High
1pm 5.8
Moderate
2pm 3.6
Moderate
3pm 3.7
Moderate
4pm 3.1
Moderate
5pm 1.4
Low
6pm 1
Low
7pm 0.6
Low
8pm 0.1
Low
9pm 0
Low
10pm 0
Low
11pm 0
Low

The UV index forecast for Monday, July 21st in Grantsburg, 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 0.4
Low