UV Index for Rock Falls, IL

Current Rock Falls UV Index

0 (Low)

Last Updated 38 minutes ago

Hourly Rock Falls UV Index

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

5 Day Hourly Rock Falls UV Index Forecast

Last Updated 16 hours ago

The UV index forecast for the next five days in Rock Falls, IL has no days reaching the extreme level and no days reaching the high or very high levels. The peak UV intensity in Rock Falls over the next five days will be 4.5 on Thursday, October 16th at 1:00 pm.

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

Time UV Index Risk
6am 0
Low
7am 0
Low
8am 0
Low
9am 0.5
Low
10am 1.3
Low
11am 2.5
Low
12pm 4
Moderate
1pm 4.5
Moderate
2pm 4
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 Friday, October 17th in Rock Falls, 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 0.4
Low
10am 1
Low
11am 2.2
Low
12pm 1.5
Low
1pm 3.2
Moderate
2pm 3
Moderate
3pm 2.4
Low
4pm 1.4
Low
5pm 0.4
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 Rock Falls, 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 0.5
Low
10am 1.3
Low
11am 2.4
Low
12pm 3.3
Moderate
1pm 3.8
Moderate
2pm 3.4
Moderate
3pm 2.4
Low
4pm 1.3
Low
5pm 0.4
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 Rock Falls, 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