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Last Updated 51 minutes ago
The hourly Keystone, SD UV Index forecast for Wednesday, July 9th, 2025.
Last Updated 16 hours ago
The UV index forecast for the next five days in Keystone, SD has no days reaching the extreme level and 2 days reaching the high or very high levels. The peak UV intensity in Keystone over the next five days will be 10.3 on Wednesday, July 9th at 1:00 pm.
The UV index forecast for Wednesday, July 9th in Keystone, SD is below.
Time | UV Index | Risk |
---|---|---|
5am | 0 |
Low |
6am | 0.1 |
Low |
7am | 0.6 |
Low |
8am | 1.7 |
Low |
9am | 3.6 |
Moderate |
10am | 5.8 |
Moderate |
11am | 8.1 |
Very High |
12pm | 9.8 |
Very High |
1pm | 10.3 |
Very High |
2pm | 9.3 |
Very High |
3pm | 7.7 |
High |
4pm | 5.2 |
Moderate |
5pm | 3.2 |
Moderate |
6pm | 1.4 |
Low |
7pm | 0.5 |
Low |
8pm | 0 |
Low |
9pm | 0 |
Low |
10pm | 0 |
Low |
11pm | 0 |
Low |
The UV index forecast for Thursday, July 10th in Keystone, 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 | 0.1 |
Low |
7am | 0.5 |
Low |
8am | 0.9 |
Low |
9am | 2.3 |
Low |
10am | 4.6 |
Moderate |
11am | 6.2 |
High |
12pm | 4.9 |
Moderate |
1pm | 7.8 |
High |
2pm | 4.8 |
Moderate |
3pm | 2.8 |
Low |
4pm | 3.2 |
Moderate |
5pm | 2.8 |
Low |
6pm | 1.3 |
Low |
7pm | 0.4 |
Low |
8pm | 0 |
Low |
9pm | 0 |
Low |
10pm | 0 |
Low |
11pm | 0 |
Low |
The UV index forecast for Friday, July 11th in Keystone, 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 | 0.1 |
Low |
7am | 0.6 |
Low |
8am | 0.5 |
Low |
9am | 0.4 |
Low |
10am | 0.8 |
Low |
11am | 0.9 |
Low |
12pm | 0.8 |
Low |
1pm | 1.2 |
Low |
2pm | 0.7 |
Low |
3pm | 5.5 |
Moderate |
4pm | 4.8 |
Moderate |
5pm | 2.8 |
Low |
6pm | 1.3 |
Low |
7pm | 0.4 |
Low |
8pm | 0 |
Low |
9pm | 0 |
Low |
10pm | 0 |
Low |
11pm | 0 |
Low |
The UV index forecast for Saturday, July 12th in Keystone, 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 | 0.1 |
Low |