0 (Low)
Last Updated 30 minutes ago
The hourly O'Fallon, IL UV Index forecast for Sunday, February 15th, 2026.
Last Updated 1 day ago
The UV index forecast for the next five days in O'Fallon, IL has no days reaching the extreme level and no days reaching the high or very high levels. The peak UV intensity in O'Fallon over the next five days will be 3.7 on Monday, February 16th at 12:00 pm.
The UV index forecast for Sunday, February 15th in O'Fallon, IL is below.
| Time | UV Index | Risk |
|---|---|---|
| 4am | 0 |
Low |
| 5am | 0 |
Low |
| 6am | 0 |
Low |
| 7am | 0 |
Low |
| 8am | 0.2 |
Low |
| 9am | 0.8 |
Low |
| 10am | 1.3 |
Low |
| 11am | 2.1 |
Low |
| 12pm | 3.3 |
Moderate |
| 1pm | 3.2 |
Moderate |
| 2pm | 2.3 |
Low |
| 3pm | 1.3 |
Low |
| 4pm | 0.5 |
Low |
| 5pm | 0 |
Low |
| 6pm | 0 |
Low |
| 7pm | 0 |
Low |
| 8pm | 0 |
Low |
| 9pm | 0 |
Low |
| 10pm | 0 |
Low |
| 11pm | 0 |
Low |
The UV index forecast for Monday, February 16th in O'Fallon, IL 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 | 0.5 |
Low |
| 9am | 1.3 |
Low |
| 10am | 2.4 |
Low |
| 11am | 3.4 |
Moderate |
| 12pm | 3.7 |
Moderate |
| 1pm | 3.3 |
Moderate |
| 2pm | 2.4 |
Low |
| 3pm | 1.3 |
Low |
| 4pm | 0.5 |
Low |
| 5pm | 0 |
Low |
| 6pm | 0 |
Low |
| 7pm | 0 |
Low |
| 8pm | 0 |
Low |
| 9pm | 0 |
Low |
| 10pm | 0 |
Low |
| 11pm | 0 |
Low |
The UV index forecast for Tuesday, February 17th in O'Fallon, IL 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 |