UV Index for Johnstown, WI

Current Johnstown UV Index

0 (Low)

Last Updated 17 minutes ago

Hourly Johnstown UV Index

The hourly Johnstown, WI UV Index forecast for Friday, May 9th, 2025.

5 Day Hourly Johnstown UV Index Forecast

Last Updated 12 hours ago

The UV index forecast for the next five days in Johnstown, WI has no days reaching the extreme level and 3 days reaching the high or very high levels. The peak UV intensity in Johnstown over the next five days will be 8.2 on Sunday, May 11th at 1:00 pm.

The UV index forecast for Friday, May 9th in Johnstown, WI 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
Low
9am 2.3
Low
10am 4
Moderate
11am 6
High
12pm 7.4
High
1pm 7.8
High
2pm 7.2
High
3pm 5.8
Moderate
4pm 4
Moderate
5pm 2.2
Low
6pm 1
Low
7pm 0.3
Low
8pm 0
Low
9pm 0
Low
10pm 0
Low
11pm 0
Low

The UV index forecast for Saturday, May 10th in Johnstown, 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 2.5
Low
10am 4.3
Moderate
11am 6.2
High
12pm 7.6
High
1pm 8
Very High
2pm 7.4
High
3pm 5.9
Moderate
4pm 4
Moderate
5pm 2.2
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 Sunday, May 11th in Johnstown, 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 2.5
Low
10am 4.4
Moderate
11am 6.3
High
12pm 7.7
High
1pm 8.2
Very High
2pm 7.5
High
3pm 6
High
4pm 4.1
Moderate
5pm 2.3
Low
6pm 1
Low
7pm 0.3
Low
8pm 0
Low
9pm 0
Low
10pm 0
Low
11pm 0
Low

The UV index forecast for Monday, May 12th in Johnstown, 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