Monday, October 19, 2026 · United States
Skin weather in San Antonio UV index & humidity today
What today’s weather in San Antonio does to your skin – based on current forecast data for UV, humidity and air quality.
Updated Oct 19, 2026, 3:10 AM local time
Today · Temperature12 to 25 °C
Low and high-
UV index
6
high
Peak UV index today: 6 – high.
From UV 3, the WHO recommends sun protection: sunscreen with SPF and shade around midday.
-
Humidity
49%outdoors
balanced
Average humidity today: 49%.
Balanced humidity – your usual routine works well.
-
Pollen
–
No pollen forecast is available for this region.
-
Air quality
57EAQI
moderate
European Air Quality Index up to 57 – moderate. Fine dust (PM2.5) averages 9.6 µg/m³.
Fine dust settles on the skin – cleanse thoroughly but gently in the evening.
Tomorrow
- 16 to 28 °C
- UV 6.4 · high
- 51% · balanced
- Air quality: poor
Skin climate in San Antonio through the year
When the air in San Antonio is driest and when the sun is strongest – based on climate data from recent years.
- Indoor air in San Antonio is driest in January: heated to 21 °C, humidity indoors drops to around 35%.
- From December to February, the average daily temperature stays below 15 °C – the time when heating is usually on.
- From February to October, the midday sun climbs higher than 45° – your shadow is then shorter than you are. According to the WHO shadow rule, UV is then usually high.
- June brings the most sunshine, with around 369 hours.
| Month | Sunshine | Midday sun | Humidity outdoors | Indoors when heated | Avg. high |
|---|---|---|---|---|---|
| Jan | 219 h | 39° | 63% | 35% | 17.1 °C |
| Feb | 205 h | 47° | 68% | 43% | 19 °C |
| Mar | 263 h | 58° | 61% | – | 25.4 °C |
| Apr | 258 h | 70° | 68% | – | 27.8 °C |
| May | 319 h | 79° | 73% | – | 31.3 °C |
| Jun | 369 h | 84° | 69% | – | 34.6 °C |
| Jul | 362 h | 82° | 68% | – | 34.9 °C |
| Aug | 364 h | 74° | 63% | – | 36.4 °C |
| Sep | 326 h | 63° | 61% | – | 34.5 °C |
| Oct | 301 h | 51° | 62% | – | 30 °C |
| Nov | 218 h | 41° | 70% | – | 22.9 °C |
| Dec | 203 h | 37° | 71% | 51% | 20.7 °C |
Indoors when heated = humidity when outdoor air is warmed to 21 °C (only months with a daily average below 15 °C). Midday sun = sun angle in mid-month.
Frequently asked questions
What is the UV index in San Antonio today?
Today (October 19) the UV index in San Antonio reaches up to 6 – high. From UV 3, the WHO recommends sun protection: sunscreen with SPF and shade around midday.
How dry is the air in San Antonio today?
Average humidity today: 49%. Balanced humidity – your usual routine works well.
When is the air driest in San Antonio?
Indoor air in San Antonio is driest in January: heated to 21 °C, humidity indoors drops to around 35%. From December to February, the average daily temperature stays below 15 °C – the time when heating is usually on.
When is UV strongest in San Antonio?
From February to October, the midday sun climbs higher than 45° – your shadow is then shorter than you are. According to the WHO shadow rule, UV is then usually high. June brings the most sunshine, with around 369 hours.
Your skin weather, every morning.
Lumée reads UV, humidity, pollen and air quality for your location and turns them into skincare that fits this exact day.
Skin weather nearby
All cities →Data: WDTEC GmbH’s own weather servers – temperature, UV index and humidity from weather models, air quality and pollen from the Copernicus Atmosphere Monitoring Service (CAMS). Ratings: UV per WHO, air quality per European Air Quality Index, pollen per NAB. Skincare tips are general recommendations and do not replace medical advice.