UV Index for Johnsburg, IL

Current Johnsburg UV Index

0 (Low)

Last Updated 9 minutes ago

Hourly Johnsburg UV Index

The hourly Johnsburg, IL UV Index forecast for Saturday, October 4th, 2025.

5 Day Hourly Johnsburg UV Index Forecast

Last Updated 6 hours ago

The UV index forecast for the next five days in Johnsburg, IL has no days reaching the extreme level and no days reaching the high or very high levels. The peak UV intensity in Johnsburg over the next five days will be 5.4 on Saturday, October 4th at 1:00 pm.

The UV index forecast for Saturday, October 4th in Johnsburg, IL is below.

Time UV Index Risk
8pm 0
Low
9pm 0
Low
10pm 0
Low
11pm 0
Low

The UV index forecast for Sunday, October 5th in Johnsburg, IL 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 0.9
Low
10am 2.2
Low
11am 3.7
Moderate
12pm 5
Moderate
1pm 5.3
Moderate
2pm 4.7
Moderate
3pm 3.4
Moderate
4pm 1.9
Low
5pm 0.7
Low
6pm 0.2
Low
7pm 0
Low
8pm 0
Low
9pm 0
Low
10pm 0
Low
11pm 0
Low

The UV index forecast for Monday, October 6th in Johnsburg, IL 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 2
Low
11am 3.3
Moderate
12pm 3.2
Moderate
1pm 3.5
Moderate
2pm 4.2
Moderate
3pm 3.1
Moderate
4pm 1.7
Low
5pm 0.6
Low
6pm 0
Low
7pm 0
Low
8pm 0
Low
9pm 0
Low
10pm 0
Low
11pm 0
Low

The UV index forecast for Tuesday, October 7th in Johnsburg, IL 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 0.1
Low
9am 0.2
Low
10am 0.2
Low
11am 0.7
Low
12pm 1.7
Low
1pm 2
Low
2pm 1.9
Low
3pm 0.5
Low
4pm 0.2
Low
5pm 0.1
Low
6pm 0
Low
7pm 0
Low
8pm 0
Low
9pm 0
Low
10pm 0
Low
11pm 0
Low

The UV index forecast for Wednesday, October 8th in Johnsburg, IL 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