When is UV highest today in Naperville, IL
UV Index
Moderate
Today's UV index is moderate. Using sunscreen or other UV protection is recommended. Try to avoid direct sun exposure between 11 AM and 4 PM.
TodayTomorrow
ExtremeVery highHighModerateLow
11AM
3PM
7PM
11PM
3AM
LowModerate
Hourly UV and cloud cover
UV index is unitless. Cloud cover is shown as a percentage.
HourUV indexCloud cover
12PM0Low79%
1PM1Low86%
2PM1Low89%
3PM2Low91%
4PM2Low92%
5PM3Moderate93%
6PM3Moderate90%
7PM3Moderate90%
8PM3Moderate88%
9PM2Low86%
10PM2Low84%
11PM1Low85%
12AM0Low81%
1AM0Low78%
2AM0Low69%
3AM0Low56%
4AM0Low43%