UV Index for Harrisburg, IL

Current Harrisburg UV Index

0 (Low)

Last Updated 44 minutes ago

Hourly Harrisburg UV Index

The hourly Harrisburg, IL UV Index forecast for Thursday, October 16th, 2025.

5 Day Hourly Harrisburg UV Index Forecast

Last Updated 16 hours ago

The UV index forecast for the next five days in Harrisburg, IL has no days reaching the extreme level and no days reaching the high or very high levels. The peak UV intensity in Harrisburg over the next five days will be 5.4 on Thursday, October 16th at 1:00 pm.

The UV index forecast for Thursday, October 16th in Harrisburg, IL is below.

Time UV Index Risk
6am 0
Low
7am 0
Low
8am 0.2
Low
9am 0.8
Low
10am 2
Low
11am 3.6
Moderate
12pm 4.9
Moderate
1pm 5.4
Moderate
2pm 4.8
Moderate
3pm 3.5
Moderate
4pm 1.9
Low
5pm 0.7
Low
6pm 0
Low
7pm 0
Low
8pm 0
Low
9pm 0
Low
10pm 0
Low
11pm 0
Low

The UV index forecast for Friday, October 17th in Harrisburg, 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 0.6
Low
10am 1.6
Low
11am 2.6
Low
12pm 2.3
Low
1pm 4.5
Moderate
2pm 3.8
Moderate
3pm 2.9
Low
4pm 1.6
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 Saturday, October 18th in Harrisburg, 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
Low
9am 0.2
Low
10am 0.6
Low
11am 0.6
Low
12pm 1.4
Low
1pm 0.6
Low
2pm 0.4
Low
3pm 0.9
Low
4pm 0.5
Low
5pm 0.2
Low
6pm 0
Low
7pm 0
Low
8pm 0
Low
9pm 0
Low
10pm 0
Low
11pm 0
Low

The UV index forecast for Sunday, October 19th in Harrisburg, 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