5.2 (Moderate)
Last Updated 19 minutes ago
The hourly Grinnell, IA UV Index forecast for Saturday, September 13th, 2025.
Last Updated 2 hours ago
The UV index forecast for the next five days in Grinnell, IA has no days reaching the extreme level and 2 days reaching the high or very high levels. The peak UV intensity in Grinnell over the next five days will be 6.9 on Saturday, September 13th at 1:00 pm.
The UV index forecast for Saturday, September 13th in Grinnell, IA is below.
| Time | UV Index | Risk |
|---|---|---|
| 4pm | 3.3 |
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 Sunday, September 14th in Grinnell, IA 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 | 0.2 |
Low |
| 9am | 0.9 |
Low |
| 10am | 2 |
Low |
| 11am | 3.4 |
Moderate |
| 12pm | 4.5 |
Moderate |
| 1pm | 5.8 |
Moderate |
| 2pm | 5.7 |
Moderate |
| 3pm | 4.2 |
Moderate |
| 4pm | 0.5 |
Low |
| 5pm | 0.3 |
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 Monday, September 15th in Grinnell, IA 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 | 0.2 |
Low |
| 9am | 0.9 |
Low |
| 10am | 2.4 |
Low |
| 11am | 3.8 |
Moderate |
| 12pm | 5.4 |
Moderate |
| 1pm | 5.8 |
Moderate |
| 2pm | 5.8 |
Moderate |
| 3pm | 4.6 |
Moderate |
| 4pm | 2.6 |
Low |
| 5pm | 1.2 |
Low |
| 6pm | 0.3 |
Low |
| 7pm | 0 |
Low |
| 8pm | 0 |
Low |
| 9pm | 0 |
Low |
| 10pm | 0 |
Low |
| 11pm | 0 |
Low |
The UV index forecast for Tuesday, September 16th in Grinnell, IA 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 | 0.2 |
Low |
| 9am | 1 |
Low |
| 10am | 2.3 |
Low |
| 11am | 3.9 |
Moderate |
| 12pm | 5.3 |
Moderate |
| 1pm | 6 |
High |
| 2pm | 5.6 |
Moderate |
| 3pm | 4.5 |
Moderate |
| 4pm | 1.6 |
Low |
| 5pm | 0.3 |
Low |
| 6pm | 0.4 |
Low |
| 7pm | 0 |
Low |
| 8pm | 0 |
Low |
| 9pm | 0 |
Low |
| 10pm | 0 |
Low |
| 11pm | 0 |
Low |
The UV index forecast for Wednesday, September 17th in Grinnell, IA 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 |