Do I need sunscreen today in Knoxville, TN
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
6PM
9PM
12AM
3AM
LowModerate
Hourly UV and cloud cover
UV index is unitless. Cloud cover is shown as a percentage.
HourUV indexCloud cover
1PM1Low95%
2PM2Low94%
3PM3Moderate93%
4PM4Moderate92%
5PM5Moderate89%
6PM5Moderate84%
7PM5Moderate79%
8PM5Moderate73%
9PM5Moderate71%
10PM4Moderate73%
11PM2Low77%
12AM1Low78%
1AM0Low72%
2AM0Low67%
3AM0Low62%