San Antonio, Texas

Last updated: 8:45 PM CDT  ·  Refresh
30°C
Feels like 35°
Mostly Clear
▲ 34°  /  ▼ 23°
Wind
13 mph SE
Humidity
70%
Dew Point
23°
Pressure
29.19 inHg
Visibility
10 mi
UV Index
0.0
Cloud Cover
14%
Sunrise
7:33 AM
Sunset
7:05 PM
Drag to pan · double-click to forecast a point
WeatherAI™ Analysis

WeatherAI Analysis: San Antonio is currently mostly clear at 30°C. Dry conditions are expected through the next 24 hours. Atmospheric instability is elevated (CAPE up to 1891 J/kg) — isolated convective development possible. Sunrise: 7:33AM · Sunset: 7:05PM.

Alerts

No active alerts for this location.
27 AQI · Good Dominant: PM2.5 Air Quality
Hourly Forecast · Next 24 Hours
Now
30°
8%
9 PM
29°
14%
10 PM
28°
14%
11 PM
28°
7%
12 AM
27°
3%
1 AM
27°
3%
2 AM
26°
4%
3 AM
26°
4%
4 AM
26°
4%
5 AM
24°
5%
6 AM
23°
5%
7 AM
23°
13%
8 AM
24°
13%
9 AM
26°
22%
10 AM
28°
35%
11 AM
29°
35%
12 PM
30°
36%
1 PM
33°
36%
2 PM
33°
37%
3 PM
34°
34%
4 PM
33°
25%
5 PM
32°
11%
6 PM
32°
3%
7 PM
31°
3%
7-Day Forecast
Tonight
34° 23°
Mostly Clear.
Wed
34° 22°
Mostly Cloudy with a 37% chance of rain.
Thu
31° 19°
Mostly Cloudy.
Fri
26° 13°
Mostly Cloudy with a 26% chance of rain.
Sat
23° 11°
Clear.
Sun
26° 12°
Drizzle, 43% chance.
Mon
26° 17°
Clear.
TimeTempConditionsPrecipWindHumidity
Now 30° Mostly Clear 8% 13 mph SE 70%
9 PM 29° Clear 14% 14 mph SSE 75%
10 PM 28° Mostly Clear 14% 14 mph SSE 80%
11 PM 28° Partly Cloudy 7% 13 mph SSE 82%
12 AM 27° Mostly Cloudy 3% 13 mph SSE 85%
1 AM 27° Mostly Cloudy 3% 12 mph SSE 86%
2 AM 26° Partly Cloudy 4% 11 mph SSE 86%
3 AM 26° Partly Cloudy 4% 10 mph SSE 85%
4 AM 26° Partly Cloudy 4% 9 mph SSE 87%
5 AM 24° Partly Cloudy 5% 8 mph SSE 88%
6 AM 23° Mostly Cloudy 5% 8 mph SSE 90%
7 AM 23° Mostly Cloudy 13% 8 mph SSE 88%
8 AM 24° Mostly Cloudy 13% 9 mph SSE 84%
9 AM 26° Mostly Cloudy 22% 10 mph SSE 80%
10 AM 28° Mostly Cloudy 35% 11 mph SSE 74%
11 AM 29° Mostly Cloudy 35% 12 mph SSE 66%
12 PM 30° Mostly Cloudy 36% 12 mph SSE 60%
1 PM 33° Mostly Cloudy 36% 13 mph SSE 57%
2 PM 33° Mostly Cloudy 37% 13 mph SSE 56%
3 PM 34° Partly Cloudy 34% 13 mph SSE 56%
4 PM 33° Partly Cloudy 25% 13 mph SSE 57%
5 PM 32° Partly Cloudy 11% 14 mph SSE 59%
6 PM 32° Mostly Clear 3% 14 mph SSE 61%
7 PM 31° Mostly Clear 3% 14 mph SSE 64%
15-Day Forecast
Today
10/13
Mostly Clear
8%
23°
34°
Wed
10/14
Mostly Cloudy
37%
22°
34°
Thu
10/15
Mostly Cloudy
18%
19°
31°
Fri
10/16
Mostly Cloudy
26%
13°
26°
Sat
10/17
Clear
3%
11°
23°
Sun
10/18
Drizzle
43%
12°
26°
Mon
10/19
Clear
8%
17°
26°
Tue
10/20
Drizzle
53%
18°
29°
Wed
10/21
Drizzle
44%
18°
31°
Thu
10/22
Drizzle
44%
18°
32°
Fri
10/23
Drizzle
60%
19°
32°
Sat
10/24
Drizzle
60%
19°
31°
Sun
10/25
Drizzle
60%
18°
29°
Mon
10/26
Drizzle
60%
17°
28°
Tue
10/27
Drizzle
60%
17°
27°
27
Good
U.S. Air Quality Index · Dominant: PM2.5
50 100 150 200

Air quality is satisfactory and poses little or no health risk.

Pollutant Breakdown · Today
PM2.5
Fine particulate matter
Dominant
27 AQI 5.0 µg/m³
O3
Ground-level ozone
25 AQI 28 ppb
3-Day Outlook
DayAQICategoryO₃PM2.5
Today 27 Good 25 27
Thu 29 Good 29 24
Fri 49 Good 49 43
About the Air Quality Index
0–50 Good
51–100 Moderate
101–150 Unhealthy for Sensitive Groups
151–200 Unhealthy
201–300 Very Unhealthy
301–500 Hazardous

The U.S. AQI runs 0–500. The overall value equals the highest individual pollutant sub-index, and the dominant pollutant is the one driving it. PM2.5 (fine particles) is reported in µg/m³ and ozone (O3) in ppb. Forecast source: NWS NAQFC.

1000850700500400300250200150100 -40-30-20-10010203040 0.41247101624 LCLLFCEL0°C Temperature (°C) Pressure (hPa)
Temp Dewpoint Parcel (SB) CAPE CIN Dry adiabat Moist adiabat Mixing ratio
RAP
Valid Tue Oct 13, 23:00'Z' · F0 · 130 (13 km CONUS/NA)
Hodograph · kt
10 20 30 40 SM
0–1 1–3 3–6 6–9 km
Instability
SBCAPE2050 J/kg
MLCAPE1780 J/kg
MUCAPE2050 J/kg
SBCIN-60 J/kg
MLCIN-47 J/kg
Lifted Index-4.5
Kinematics
0–6 km Shear11 kt
0–1 km Shear9 kt
Eff. Shear18 kt
0–1 km SRH22
0–3 km SRH68
Eff. SRH68
Storm Motion245° @ 4 kt
0–1 km EHI0.3
Composite Parameters
Sig. Tornado0.0
STP (eff)0.0
Supercell0.0
K-Index30.2
Thermo & Levels
PWAT1.99 in
0–3 km LR5.7 °C/km
700–500 LR6.2 °C/km
Total Totals46.2
LCL898 hPa
LFC706 hPa
EL138 hPa
Freezing Lvl16,752 ft