On this page, you can find the current UV Index and hourly 5 day UV Index forecast for Riley, McHenry County, Illinois (IL). The Ultraviolet Index forecast, which measures the radiation from the sun that reaches the Earth's surface is updated daily.
(Updated 42 minutes ago.)
As of 3:42 PM CST, the UV Index in Riley, IL is 0.1 (Low).
UV Index Data sourced from the NOAA.
As of 3:42 PM CST today in Riley, IL, the UV Index is currently at a low level of 0.1. As the day progresses, the UV index is expected to fall as the sun sets.
The UV Index will return to low levels of 0.1 at 4:00 PM. As the day transitions into the night, the UV Index will drop back down to 0 at 5:00 PM.
| Time Range | UV Index | Risk |
|---|---|---|
| 7:00 AM - 12:00 AM (CST) | 0 - 0.9 | Low |
| Time Range | UV Index | Risk |
|---|---|---|
| 12:00 AM - 12:00 AM (CST) | 0 - 1.1 | Low |
| Time | UV Index | Risk |
|---|---|---|
| 3:00 PM - 4:00 PM (Now, CST) | 0.1 | Low |
| 4:00 PM - 5:00 PM | 0.1 | Low |
| 5:00 PM - 6:00 PM | 0 | Low |
| 6:00 PM - 7:00 PM | 0 | Low |
| 7:00 PM - 8:00 PM | 0 | 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 |