UV Index for Johnsburg, IL

Current Johnsburg UV Index

5.1 (Moderate)

Last Updated 41 minutes ago

Hourly Johnsburg UV Index

The hourly Johnsburg, IL UV Index forecast for Tuesday, July 1st, 2025.

5 Day Hourly Johnsburg UV Index Forecast

Last Updated 21 hours ago

The UV index forecast for the next five days in Johnsburg, IL has no days reaching the extreme level and 3 days reaching the high or very high levels. The peak UV intensity in Johnsburg over the next five days will be 10 on Wednesday, July 2nd at 1:00 pm.

The UV index forecast for Tuesday, July 1st in Johnsburg, IL is below.

Time UV Index Risk
11am 7
High
12pm 8.4
Very High
1pm 9
Very High
2pm 8.4
Very High
3pm 6.8
High
4pm 4.8
Moderate
5pm 2.8
Low
6pm 1.3
Low
7pm 0.4
Low
8pm 0
Low
9pm 0
Low
10pm 0
Low
11pm 0
Low

The UV index forecast for Wednesday, July 2nd 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 0.1
Low
7am 0.6
Low
8am 1.6
Low
9am 3.3
Moderate
10am 5.5
Moderate
11am 7.9
High
12pm 9.4
Very High
1pm 10
Very High
2pm 9.3
Very High
3pm 7.6
High
4pm 3.9
Moderate
5pm 0.7
Low
6pm 0.8
Low
7pm 0.4
Low
8pm 0
Low
9pm 0
Low
10pm 0
Low
11pm 0
Low

The UV index forecast for Thursday, July 3rd 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 0.1
Low
7am 0.6
Low
8am 1.7
Low
9am 3.5
Moderate
10am 5.4
Moderate
11am 7
High
12pm 6.5
High
1pm 6.5
High
2pm 6
High
3pm 6.4
High
4pm 5.2
Moderate
5pm 3
Moderate
6pm 1.4
Low
7pm 0.4
Low
8pm 0
Low
9pm 0
Low
10pm 0
Low
11pm 0
Low

The UV index forecast for Friday, July 4th 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 0.1
Low
7am 0.6
Low