San Antonio, Texas

Last updated: 9:47 PM CDT  ·  Refresh
29°C
Feels like 34°
Clear
▲ 34°  /  ▼ 23°
Wind
14 mph SE
Humidity
75%
Dew Point
24°
Pressure
29.20 inHg
Visibility
10 mi
UV Index
0.0
Cloud Cover
7%
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 clear at 29°C. Dry conditions are expected through the next 24 hours. Atmospheric instability is elevated (CAPE up to 1775 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
29°
3%
10 PM
28°
14%
11 PM
28°
7%
12 AM
27°
16%
1 AM
27°
3%
2 AM
27°
4%
3 AM
26°
4%
4 AM
26°
4%
5 AM
24°
4%
6 AM
23°
5%
7 AM
23°
13%
8 AM
24°
13%
9 AM
26°
22%
10 AM
28°
34%
11 AM
29°
35%
12 PM
30°
35%
1 PM
33°
36%
2 PM
33°
36%
3 PM
33°
34%
4 PM
33°
25%
5 PM
32°
11%
6 PM
32°
3%
7 PM
31°
3%
8 PM
29°
6%
7-Day Forecast
Tonight
34° 23°
Clear.
Wed
33° 22°
Mostly Cloudy with a 35% chance of rain.
Thu
31° 19°
Mostly Cloudy.
Fri
26° 13°
Mostly Cloudy with a 20% chance of rain.
Sat
23° 11°
Clear.
Sun
26° 12°
Drizzle, 43% chance.
Mon
26° 17°
Clear.
TimeTempConditionsPrecipWindHumidity
Now 29° Clear 3% 14 mph SE 75%
10 PM 28° Mostly Clear 14% 14 mph SSE 78%
11 PM 28° Partly Cloudy 7% 13 mph SSE 82%
12 AM 27° Mostly Cloudy 16% 13 mph SSE 85%
1 AM 27° Mostly Cloudy 3% 12 mph SSE 86%
2 AM 27° Partly Cloudy 4% 11 mph SSE 86%
3 AM 26° Partly Cloudy 4% 10 mph SSE 86%
4 AM 26° Partly Cloudy 4% 9 mph SSE 87%
5 AM 24° Partly Cloudy 4% 8 mph SSE 89%
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 34% 11 mph SSE 74%
11 AM 29° Mostly Cloudy 35% 12 mph SSE 67%
12 PM 30° Mostly Cloudy 35% 12 mph SSE 60%
1 PM 33° Mostly Cloudy 36% 12 mph SSE 58%
2 PM 33° Mostly Cloudy 36% 13 mph SSE 57%
3 PM 33° 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 60%
7 PM 31° Mostly Clear 3% 14 mph SSE 63%
8 PM 29° Clear 6% 14 mph SE 67%
15-Day Forecast
Today
10/13
Clear
3%
23°
34°
Wed
10/14
Mostly Cloudy
35%
22°
33°
Thu
10/15
Mostly Cloudy
18%
19°
31°
Fri
10/16
Mostly Cloudy
20%
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
SBCAPE1986 J/kg
MLCAPE1768 J/kg
MUCAPE1986 J/kg
SBCIN-82 J/kg
MLCIN-52 J/kg
Lifted Index-4.4
Kinematics
0–6 km Shear11 kt
0–1 km Shear8 kt
Eff. Shear18 kt
0–1 km SRH19
0–3 km SRH66
Eff. SRH66
Storm Motion241° @ 3 kt
0–1 km EHI0.2
Composite Parameters
Sig. Tornado0.0
STP (eff)0.0
Supercell0.0
K-Index30.2
Thermo & Levels
PWAT2.00 in
0–3 km LR5.4 °C/km
700–500 LR6.2 °C/km
Total Totals46.2
LCL912 hPa
LFC702 hPa
EL140 hPa
Freezing Lvl16,762 ft