Sunny Hours / UV index / US / San Antonio
UV index in San Antonio, TX today
Today's peak UV index in San Antonio is 5 (moderate), around 1pm. It is 3 or above from 10am to 5pm, which is when the EPA recommends protecting your skin. Tomorrow's peak is 3 (moderate).
- UV now0 (low)
- Peak today5 (moderate)
- Time of peakAround 1pm
- Hours at 3 or above7
- Sunrise6:47 am
- Sunset5:46 pm
UV index in San Antonio by hour, next 7 days
Each square is one daylight hour and the number in it is the UV index for that hour. The numbers across the top are the hour of the day.
| 6a | 7a | 8a | 9a | 10a | 11a | 12p | 1p | 2p | 3p | 4p | 5p | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Today | 0 | 0 | 0 | 1 | 3 | 4 | 4 | 5 | 5 | 4 | 3 | 1 |
| Tue, Nov 3 | 0 | 0 | 0 | 0 | 1 | 1 | 1 | 2 | 1 | 3 | 3 | 1 |
| Wed, Nov 4 | 0 | 0 | 1 | 2 | 3 | 5 | 6 | 6 | 5 | 4 | 3 | 1 |
| Thu, Nov 5 | 0 | 0 | 0 | 1 | 1 | 2 | 2 | 2 | 2 | 2 | 1 | 1 |
| Fri, Nov 6 | 0 | 0 | 0 | 2 | 3 | 5 | 5 | 5 | 5 | 4 | 3 | 1 |
| Sat, Nov 7 | 0 | 0 | 1 | 2 | 3 | 4 | 5 | 5 | 4 | 3 | 2 | 1 |
| Sun, Nov 8 | 0 | 0 | 1 | 2 | 3 | 4 | 5 | 5 | 5 | 4 | 2 | 1 |
- Low (1 to 2)
- Moderate (3 to 5)
- High (6 to 7)
- Very high (8 to 10)
Day by day
| Day | Peak UV | Level | At 3 or above | Sunrise | Sunset |
|---|---|---|---|---|---|
| Today | 5 | moderate | 10am to 5pm | 6:47 am | 5:46 pm |
| Tue, Nov 3 | 3 | moderate | 3pm to 5pm | 6:48 am | 5:46 pm |
| Wed, Nov 4 | 6 | high | 10am to 5pm | 6:49 am | 5:45 pm |
| Thu, Nov 5 | 2 | low | None | 6:50 am | 5:44 pm |
| Fri, Nov 6 | 5 | moderate | 10am to 5pm | 6:50 am | 5:43 pm |
| Sat, Nov 7 | 5 | moderate | 10am to 4pm | 6:51 am | 5:43 pm |
| Sun, Nov 8 | 5 | moderate | 10am to 4pm | 6:52 am | 5:42 pm |
What today's level means
Today's peak of 5 is in the moderate band. The guidance for that band is: seek shade around midday, cover up and wear sunscreen. The EPA recommends protecting your skin whenever the index is 3 or higher, and you can burn even when it is cloudy.
The UV index depends mostly on how high the sun is in the sky, so it peaks around the middle of the day and is far higher in summer than in winter. It is not the same as temperature. For the full scale and what it means for tanning and burning, see what the UV index numbers mean.
UV tells you how strong the sun is, not whether it will be out. For that, see the sunshine forecast for San Antonio.
UV index in other cities
UV forecast for San Antonio, Texas. Updated November 2 at 7:33 AM. This is a forecast, not a measurement. Weather data by Open-Meteo.