0.2 (Low)
Last Updated 56 minutes ago
The hourly Brant Lake, SD UV Index forecast for Thursday, September 18th, 2025.
Last Updated 5 hours ago
The UV index forecast for the next five days in Brant Lake, SD has no days reaching the extreme level and no days reaching the high or very high levels. The peak UV intensity in Brant Lake over the next five days will be 5.6 on Thursday, September 18th at 1:00 pm.
The UV index forecast for Thursday, September 18th in Brant Lake, SD is below.
| Time | UV Index | Risk |
|---|---|---|
| 7pm | 0.1 |
Low |
| 8pm | 0 |
Low |
| 9pm | 0 |
Low |
| 10pm | 0 |
Low |
| 11pm | 0 |
Low |
The UV index forecast for Friday, September 19th in Brant Lake, 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 |
Low |
| 8am | 0.1 |
Low |
| 9am | 0.6 |
Low |
| 10am | 1.3 |
Low |
| 11am | 2.3 |
Low |
| 12pm | 4.2 |
Moderate |
| 1pm | 5.2 |
Moderate |
| 2pm | 5.2 |
Moderate |
| 3pm | 4.3 |
Moderate |
| 4pm | 3 |
Moderate |
| 5pm | 1.3 |
Low |
| 6pm | 0.2 |
Low |
| 7pm | 0 |
Low |
| 8pm | 0 |
Low |
| 9pm | 0 |
Low |
| 10pm | 0 |
Low |
| 11pm | 0 |
Low |
The UV index forecast for Saturday, September 20th in Brant Lake, 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 |
Low |
| 8am | 0.1 |
Low |
| 9am | 0.3 |
Low |
| 10am | 0.9 |
Low |
| 11am | 2.8 |
Low |
| 12pm | 4.1 |
Moderate |
| 1pm | 4.8 |
Moderate |
| 2pm | 5.5 |
Moderate |
| 3pm | 4.6 |
Moderate |
| 4pm | 2.9 |
Low |
| 5pm | 1.5 |
Low |
| 6pm | 0.6 |
Low |
| 7pm | 0 |
Low |
| 8pm | 0 |
Low |
| 9pm | 0 |
Low |
| 10pm | 0 |
Low |
| 11pm | 0 |
Low |
The UV index forecast for Sunday, September 21st in Brant Lake, 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 |
Low |
| 8am | 0.1 |
Low |
| 9am | 0.6 |
Low |
| 10am | 1.7 |
Low |
| 11am | 3.1 |
Moderate |
| 12pm | 4.6 |
Moderate |
| 1pm | 5.4 |
Moderate |
| 2pm | 5.4 |
Moderate |
| 3pm | 4.5 |
Moderate |
| 4pm | 3 |
Moderate |
| 5pm | 1.6 |
Low |
| 6pm | 0.6 |
Low |
| 7pm | 0 |
Low |
| 8pm | 0 |
Low |
| 9pm | 0 |
Low |
| 10pm | 0 |
Low |
| 11pm | 0 |
Low |
The UV index forecast for Monday, September 22nd in Brant Lake, 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 |
Low |