On this page, you can find the current UV Index and hourly 5 day UV Index forecast for Lewis, Polk County, Wisconsin (WI). 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 9:04 PM
CDT, the UV Index in Lewis, WI is 0 (Low).
The UV Index is expected to rise to 0.2 between 9:00 AM - 10:00 AM
CDT
tomorrow.
UV Index Data sourced from the NOAA.
As of 9:04 PM CDT on Thursday, October 30, 2025, the UV index in Lewis, WI is at a low level of 0. At this time of the night, the sun has already set and there is no exposure to UV radiation. The UV Index will remain at 0 through the early morning hours until around 9:00 AM tomorrow.
As the day progresses tomorrow (October 31, 2025), the UV Index will rise to 0.2 between 9:00 AM - 10:00 AM, still considered low. The UV Index will stay low all day, peaking between 12:00 PM and 1:00 PM with a reading of 1.1.
After reaching its peak for the day, the UV Index will gradually decline through the afternoon and evening. The UV Index will return to low levels of 1 at 1:00 PM. As the day transitions into the night, the UV Index will drop back down to 0 at 6:00 PM.
| Time Range | UV Index | Risk |
|---|---|---|
| 8:00 AM - 12:00 AM (CDT) | 0 - 1.9 | Low |
| Time Range | UV Index | Risk |
|---|---|---|
| 12:00 AM - 12:00 AM (CDT) | 0 - 1.1 | Low |
| Time | UV Index | Risk |
|---|---|---|
| 9:00 PM - 10:00 PM (Now, CDT) | 0 | Low |
| 10:00 PM - 11:00 PM | 0 | Low |
| 11:00 PM - 12:00 AM | 0 | Low |