UV Index for DeKalb, IL

Current DeKalb UV Index

0.1 (Low)

Last Updated 10 minutes ago

Hourly DeKalb UV Index

The hourly DeKalb, IL UV Index forecast for Wednesday, October 8th, 2025.

5 Day Hourly DeKalb UV Index Forecast

Last Updated 5 hours ago

The UV index forecast for the next five days in DeKalb, IL has no days reaching the extreme level and no days reaching the high or very high levels. The peak UV intensity in DeKalb over the next five days will be 4.5 on Wednesday, October 8th at 1:00 pm.

The UV index forecast for Wednesday, October 8th in DeKalb, IL is below.

Time UV Index Risk
7pm 0
Low
8pm 0
Low
9pm 0
Low
10pm 0
Low
11pm 0
Low

The UV index forecast for Thursday, October 9th in DeKalb, 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 0.7
Low
10am 1.8
Low
11am 3.1
Moderate
12pm 4.1
Moderate
1pm 4.5
Moderate
2pm 4
Moderate
3pm 2.9
Low
4pm 1.6
Low
5pm 0.6
Low
6pm 0.1
Low
7pm 0
Low
8pm 0
Low
9pm 0
Low
10pm 0
Low
11pm 0
Low

The UV index forecast for Friday, October 10th in DeKalb, 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 0.4
Low
10am 0.4
Low
11am 0.5
Low
12pm 0.6
Low
1pm 2.6
Low
2pm 3.8
Moderate
3pm 2.7
Low
4pm 1.5
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 Saturday, October 11th in DeKalb, 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 0.7
Low
10am 1.6
Low
11am 2.8
Low
12pm 3.8
Moderate
1pm 4.2
Moderate
2pm 3.8
Moderate
3pm 2.8
Low
4pm 1.5
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 Sunday, October 12th in DeKalb, 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