0 (Low)
Last Updated 51 minutes ago
The hourly Roundup, MT UV Index forecast for Thursday, August 21st, 2025.
Last Updated 1 day ago
The UV index forecast for the next five days in Roundup, MT has no days reaching the extreme level and 3 days reaching the high or very high levels. The peak UV intensity in Roundup over the next five days will be 8.1 on Saturday, August 23rd at 1:00 pm.
The UV index forecast for Thursday, August 21st in Roundup, MT is below.
| Time | UV Index | Risk |
|---|---|---|
| 11pm | 0 |
Low |
The UV index forecast for Friday, August 22nd in Roundup, MT 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 | 0.6 |
Low |
| 9am | 1.7 |
Low |
| 10am | 3.4 |
Moderate |
| 11am | 5.3 |
Moderate |
| 12pm | 7 |
High |
| 1pm | 7.9 |
High |
| 2pm | 7.7 |
High |
| 3pm | 6.4 |
High |
| 4pm | 4.5 |
Moderate |
| 5pm | 2.6 |
Low |
| 6pm | 1.1 |
Low |
| 7pm | 0.3 |
Low |
| 8pm | 0 |
Low |
| 9pm | 0 |
Low |
| 10pm | 0 |
Low |
| 11pm | 0 |
Low |
The UV index forecast for Saturday, August 23rd in Roundup, MT 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 | 0.6 |
Low |
| 9am | 1.7 |
Low |
| 10am | 3.5 |
Moderate |
| 11am | 5.5 |
Moderate |
| 12pm | 7.2 |
High |
| 1pm | 8.1 |
Very High |
| 2pm | 7.8 |
High |
| 3pm | 6.5 |
High |
| 4pm | 4.6 |
Moderate |
| 5pm | 2.6 |
Low |
| 6pm | 1.1 |
Low |
| 7pm | 0.3 |
Low |
| 8pm | 0 |
Low |
| 9pm | 0 |
Low |
| 10pm | 0 |
Low |
| 11pm | 0 |
Low |
The UV index forecast for Sunday, August 24th in Roundup, MT 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 |