Do I need sunscreen tomorrow in San Antonio, TX
UV Index
Very high
This day's UV index is very high. If working or spending time outdoors, wear UV protective clothing, use sunscreen, and try to avoid direct sun exposure between 11 AM and 4 PM.
Sun24 hours
ExtremeVery highHighModerateLow
12AM
4AM
8AM
12PM
4PM
8PM
11PM
LowModerateHighVery high
Hourly UV and cloud cover
UV index is unitless. Cloud cover is shown as a percentage.
HourUV indexCloud cover
5AM0Low15%
6AM0Low15%
7AM0Low16%
8AM0Low16%
9AM0Low14%
10AM0Low18%
11AM0Low26%
12PM0Low37%
1PM1Low36%
2PM1Low32%
3PM2Low23%
4PM4Moderate19%
5PM6High10%
6PM9Very high9%
7PM9Very high7%
8PM9Very high8%
9PM9Very high7%
10PM7High4%
11PM4Moderate4%
12AM2Low6%
1AM1Low6%
2AM1Low5%
3AM0Low5%
4AM0Low5%