0.2 (Low)
Last Updated 55 minutes ago
The hourly Green Grass, SD UV Index forecast for Thursday, September 18th, 2025.
Last Updated 23 hours ago
The UV index forecast for the next five days in Green Grass, SD has no days reaching the extreme level and no days reaching the high or very high levels. The peak UV intensity in Green Grass over the next five days will be 5.2 on Sunday, September 21st at 12:00 pm.
The UV index forecast for Thursday, September 18th in Green Grass, SD is below.
| Time | UV Index | Risk |
|---|---|---|
| 12pm | 0.4 |
Low |
| 1pm | 0.6 |
Low |
| 2pm | 0.7 |
Low |
| 3pm | 0.8 |
Low |
| 4pm | 0.6 |
Low |
| 5pm | 0.2 |
Low |
| 6pm | 0.1 |
Low |
| 7pm | 0 |
Low |
| 8pm | 0 |
Low |
| 9pm | 0 |
Low |
| 10pm | 0 |
Low |
| 11pm | 0 |
Low |
The UV index forecast for Friday, September 19th in Green Grass, 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 | 0.4 |
Low |
| 9am | 1.4 |
Low |
| 10am | 2.1 |
Low |
| 11am | 3 |
Moderate |
| 12pm | 3.7 |
Moderate |
| 1pm | 3.6 |
Moderate |
| 2pm | 4.9 |
Moderate |
| 3pm | 3.6 |
Moderate |
| 4pm | 2.1 |
Low |
| 5pm | 0.9 |
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 Green Grass, 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 | 0.4 |
Low |
| 9am | 1.3 |
Low |
| 10am | 2.6 |
Low |
| 11am | 3.6 |
Moderate |
| 12pm | 4.2 |
Moderate |
| 1pm | 3.8 |
Moderate |
| 2pm | 3 |
Moderate |
| 3pm | 2.3 |
Low |
| 4pm | 1.8 |
Low |
| 5pm | 0.8 |
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 Sunday, September 21st in Green Grass, 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 |
| 10am | 2.7 |
Low |
| 11am | 4.2 |
Moderate |
| 12pm | 5.2 |
Moderate |
| 1pm | 5.2 |
Moderate |
| 2pm | 4.4 |
Moderate |
| 3pm | 3.2 |
Moderate |
| 4pm | 1.8 |
Low |
| 5pm | 0.8 |
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 Monday, September 22nd in Green Grass, 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 |