Sun Prairie, Wisconsin, United States UV Index Forecast

Find the UV Index forecast for today, tomorrow and the next 15 days for Sun Prairie, Wisconsin, United States, The Ultraviolet Index forecast, which measures the radiation from the sun that reaches the Earth's surface is updated hourly.

NOW
11:20 am

Moderate5

UV INDEX

Hourly UV Index Forecast for Today
September 12, 2025

0
7 am
1
8 am
2
9 am
4
10 am
5
11 am
7
12 pm
7
1 pm
7
2 pm
7
3 pm
5
4 pm
4
5 pm
2
6 pm
  • Low
    1-2
  • Moderate
    3-4-5
  • High
    6-7
  • Very High
    8-9-10
  • Xtreme
    11+

As of 11:20 am today in Sun Prairie, Wisconsin, United States, the UV Index is currently at a Moderate level of 5.

Summary of Hourly UV Index Forecast for Today and Tomorrow in Sun Prairie, Wisconsin, United States.

Today

Time Range UV Index Risk
7 am 0
Low
8 am 1
Low
9 am 2
Low
10 am 4
Moderate
11 am 5
Moderate
12 pm 7
High
1 pm 7
High
2 pm 7
High
3 pm 7
High
4 pm 5
Moderate
5 pm 4
Moderate
6 pm 2
Low

Tomorrow

Time Range UV Index Risk
7 am 0
Low
8 am 0
Low
9 am 2
Low
10 am 3
Moderate
11 am 4
Moderate
12 pm 5
Moderate
1 pm 5
Moderate
2 pm 6
High
3 pm 6
High
4 pm 4
Moderate
5 pm 3
Moderate
6 pm 2
Low

Daily Sun Prairie UV Index Forecast for the next 15 days:

7
12 Sep
6
13 Sep
6
14 Sep
6
15 Sep
6
16 Sep
6
17 Sep
6
18 Sep
1
19 Sep
7
20 Sep
7
21 Sep
7
22 Sep
7
23 Sep
5
24 Sep
6
25 Sep
  • Low
    1-2
  • Moderate
    3-4-5
  • High
    6-7
  • Very High
    8-9-10
  • Xtreme
    11+

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