UV Index for Grand Rapids, WI

Current Grand Rapids UV Index

0.8 (Low)

Last Updated 54 minutes ago

Hourly Grand Rapids UV Index

The hourly Grand Rapids, WI UV Index forecast for Wednesday, August 13th, 2025.

5 Day Hourly Grand Rapids UV Index Forecast

Last Updated 19 hours ago

The UV index forecast for the next five days in Grand Rapids, WI has no days reaching the extreme level and 3 days reaching the high or very high levels. The peak UV intensity in Grand Rapids over the next five days will be 7.9 on Friday, August 15th at 1:00 pm.

The UV index forecast for Wednesday, August 13th in Grand Rapids, WI is below.

Time UV Index Risk
9am 2
Low
10am 3.8
Moderate
11am 5.6
Moderate
12pm 7
High
1pm 7.5
High
2pm 7
High
3pm 5.6
Moderate
4pm 3.8
Moderate
5pm 2.1
Low
6pm 0.8
Low
7pm 0.2
Low
8pm 0
Low
9pm 0
Low
10pm 0
Low
11pm 0
Low

The UV index forecast for Thursday, August 14th in Grand Rapids, WI 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 0.2
Low
8am 0.8
Low
9am 2.1
Low
10am 3.9
Moderate
11am 5.6
Moderate
12pm 6.9
High
1pm 7.4
High
2pm 6.6
High
3pm 5.3
Moderate
4pm 3.8
Moderate
5pm 2
Low
6pm 0.8
Low
7pm 0.2
Low
8pm 0
Low
9pm 0
Low
10pm 0
Low
11pm 0
Low

The UV index forecast for Friday, August 15th in Grand Rapids, WI 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 0.2
Low
8am 0.9
Low
9am 2.2
Low
10am 3.9
Moderate
11am 5.5
Moderate
12pm 7.4
High
1pm 7.9
High
2pm 7.2
High
3pm 5.8
Moderate
4pm 3.9
Moderate
5pm 2
Low
6pm 0.8
Low
7pm 0.2
Low
8pm 0
Low
9pm 0
Low
10pm 0
Low
11pm 0
Low

The UV index forecast for Saturday, August 16th in Grand Rapids, WI 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 0.2
Low