On this page, you can find the current UV Index and hourly 5 day UV Index forecast for O'Fallon, St. Charles County, Missouri (MO). The Ultraviolet Index forecast, which measures the radiation from the sun that reaches the Earth's surface is updated daily.
(Updated 4 minutes ago.)
As of 10:04 AM
CDT, the UV Index in O'Fallon, MO is 3.6 (Moderate).
The UV Index is expected to fall
to 2.3 (Low) between 11:00 AM - 12:00 PM
CDT today.
UV Index Data sourced from the NOAA.
As of 10:04 AM CDT today in O'Fallon, MO, the UV Index is currently at its highest level for the day, 3.6, which is classified as moderate risk. As the day progresses, the UV index is expected to fall as the sun sets.
It will return to moderate levels at 1:00 PM and then drop to low levels again from 11:00 AM onwards. As the day transitions into the night, the UV Index will drop back down to 0 at 8:00 PM.
| Time Range | UV Index | Risk |
|---|---|---|
| 12:00 AM - 9:00 AM (CDT) | 0 - 0.8 | Low |
| 9:00 AM - 11:00 AM | 3 - 3.6 | Moderate |
| 11:00 AM - 1:00 PM | 0.9 - 2.3 | Low |
| 1:00 PM - 3:00 PM | 2.5 - 3.3 | Moderate |
| 3:00 PM - 4:00 PM | 1 | Low |
| 4:00 PM - 5:00 PM | 2.7 | Moderate |
| 5:00 PM - 12:00 AM | 0 - 1.8 | Low |
| Time Range | UV Index | Risk |
|---|---|---|
| 12:00 AM - 9:00 AM (CDT) | 0 - 1.2 | Low |
| 9:00 AM - 11:00 AM | 2.9 - 5.1 | Moderate |
| 11:00 AM - 12:00 PM | 7.4 | High |
| 12:00 PM - 3:00 PM | 9.1 - 9.9 | Very High |
| 3:00 PM - 4:00 PM | 7.2 | High |
| 4:00 PM - 6:00 PM | 3.1 - 5.3 | Moderate |
| 6:00 PM - 12:00 AM | 0 - 1.4 | Low |
| Time | UV Index | Risk |
|---|---|---|
| 10:00 AM - 11:00 AM (Now, CDT) | 3.6 | Moderate |
| 11:00 AM - 12:00 PM | 2.3 | Low |
| 12:00 PM - 1:00 PM | 0.9 | Low |
| 1:00 PM - 2:00 PM | 3.3 | Moderate |
| 2:00 PM - 3:00 PM | 2.5 | Moderate |
| 3:00 PM - 4:00 PM | 1 | Low |
| 4:00 PM - 5:00 PM | 2.7 | Moderate |
| 5:00 PM - 6:00 PM | 1.8 | Low |
| 6:00 PM - 7:00 PM | 0.8 | Low |
| 7:00 PM - 8:00 PM | 0.4 | Low |
| 8:00 PM - 9:00 PM | 0 | Low |
| 9:00 PM - 10:00 PM | 0 | Low |
| 10:00 PM - 11:00 PM | 0 | Low |
| 11:00 PM - 12:00 AM | 0 | Low |