When is UV highest today in Joliet, 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
1PM
4PM
7PM
10PM
1AM
4AM
LowModerate
Hourly UV and cloud cover
UV index is unitless. Cloud cover is shown as a percentage.
HourUV indexCloud cover
2PM1Low95%
3PM1Low94%
4PM2Low93%
5PM3Moderate93%
6PM4Moderate92%
7PM3Moderate90%
8PM3Moderate87%
9PM2Low82%
10PM2Low78%
11PM1Low72%
12AM0Low70%
1AM0Low69%
2AM0Low64%
3AM0Low52%
4AM0Low41%