UV Index for Grenville, SD

Current Grenville UV Index

0 (Low)

Last Updated 21 minutes ago

Hourly Grenville UV Index

The hourly Grenville, SD UV Index forecast for Wednesday, July 9th, 2025.

5 Day Hourly Grenville UV Index Forecast

Last Updated 17 hours ago

The UV index forecast for the next five days in Grenville, SD has no days reaching the extreme level and 2 days reaching the high or very high levels. The peak UV intensity in Grenville over the next five days will be 9.1 on Thursday, July 10th at 1:00 pm.

The UV index forecast for Wednesday, July 9th in Grenville, SD is below.

Time UV Index Risk
7am 0.3
Low
8am 0.9
Low
9am 2.1
Low
10am 4
Moderate
11am 6
High
12pm 7.8
High
1pm 8.8
Very High
2pm 8.6
Very High
3pm 7.4
High
4pm 5.7
Moderate
5pm 3.8
Moderate
6pm 2.2
Low
7pm 0.9
Low
8pm 0.2
Low
9pm 0
Low
10pm 0
Low
11pm 0
Low

The UV index forecast for Thursday, July 10th in Grenville, SD 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 0.1
Low
8am 0.7
Low
9am 2
Low
10am 3.6
Moderate
11am 5.7
Moderate
12pm 7.8
High
1pm 9.1
Very High
2pm 9
Very High
3pm 8
Very High
4pm 6.2
High
5pm 4
Moderate
6pm 2.1
Low
7pm 0.9
Low
8pm 0.2
Low
9pm 0
Low
10pm 0
Low
11pm 0
Low

The UV index forecast for Friday, July 11th in Grenville, SD 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 0.6
Low
9am 1.2
Low
10am 2.4
Low
11am 3
Moderate
12pm 3.4
Moderate
1pm 2
Low
2pm 2.8
Low
3pm 1.8
Low
4pm 0.6
Low
5pm 0.5
Low
6pm 0.6
Low
7pm 0.8
Low
8pm 0.2
Low
9pm 0
Low
10pm 0
Low
11pm 0
Low

The UV index forecast for Saturday, July 12th in Grenville, SD 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