UV index today in St. Louis, MO
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
9PM
10PM
11PM
12AM
1AM
2AM
3AM
4AM
LowModerate
Hourly UV and cloud cover
UV index is unitless. Cloud cover is shown as a percentage.
HourUV indexCloud cover
10PM4Moderate83%
11PM2Low80%
12AM1Low78%
1AM1Low75%
2AM0Low72%
3AM0Low66%
4AM0Low66%