🇺🇸 Weather in San Antonio
Map Overlays:
Hourly Forecast for San Antonio
17:00
41°
0%
18:00
40°
0%
19:00
38°
0%
20:00
35°
0%
21:00
33°
1%
22:00
31°
2%
23:00
29°
2%
00:00
27°
2%
01:00
26°
2%
02:00
25°
4%
03:00
24°
5%
04:00
24°
6%
05:00
24°
6%
06:00
24°
7%
07:00
24°
8%
08:00
24°
7%
09:00
26°
4%
10:00
28°
2%
11:00
31°
1%
12:00
33°
0%
13:00
35°
0%
14:00
37°
0%
15:00
38°
0%
16:00
38°
0%
14-Day Forecast for San Antonio
2026-08-25
Sunny
41° /
23°
2026-08-26
Sunny
39° /
24°
2026-08-27
Sunny
36° /
25°
2026-08-28
Sunny
38° /
24°
2026-08-29
Sunny
39° /
24°
2026-08-30
Sunny
38° /
24°
2026-08-31
Sunny
37° /
24°
Additional Forecasts for San Antonio
Air Quality
💨 US EPA Index 1 (Good)
CO (Carbon Monoxide) 101.0 μg/m³
O₃ (Ozone) 105.0 μg/m³
NO₂ (Nitrogen Dioxide) 1.3 μg/m³
SO₂ (Sulphur Dioxide) 1.1 μg/m³
PM2.5 (Fine particles) 7.6 μg/m³
PM10 (Coarse particles) 11.1 μg/m³
Historical Weather
Weather Forecasts for Other Cities in United States
Weather in San Antonio — FAQ
Answers refreshed each request based on current conditions in San Antonio.
What is the weather like right now in San Antonio?
Right now in San Antonio, United States the temperature is 41.4°C (feels like 41.8°C), with sunny. Relative humidity is 26% and wind is 13.0 km/h.
What is today's high and low temperature in San Antonio?
Today's forecast high in San Antonio is 41.4°C and the overnight low is 23.4°C. The diurnal range — high minus low — depends on cloud cover; clear days swing more than overcast ones.
Will it rain in San Antonio today?
The chance of precipitation in San Antonio today is 2%. Forecast accuracy is highest within the next 6 hours and decreases steadily out to 14 days.
How often does the weather here update?
Current observations refresh every 15-60 minutes from the nearest monitoring stations operated by national meteorological agencies. The hourly forecast updates approximately every hour; the 7- and 14-day outlook is recomputed several times per day.
What does 'feels like' temperature mean?
Feels-like (apparent) temperature accounts for humidity, wind chill and direct sunshine — variables that change how the human body perceives heat or cold. On hot, humid days it can be 3-7°C above the actual reading; on cold windy days it can be 5-15°C below.
Why does the temperature in San Antonio differ from nearby cities?
Even short distances can change temperatures noticeably. San Antonio's reading reflects altitude, proximity to large bodies of water, urban heat island effects, and the exact location of the monitoring stations supplying the data. Coastal cities are typically milder and more humid than inland equivalents.