Heat Advisory — Williamson, TX, Hays, TX, Travis, TX, Bastrop, TX, Lee, TX, Bexar, TX, Comal, TX, Guadalupe, TX, Caldwell, TX, Fayette, TX, Atascosa, TX, Wilson, TX, Karnes, TX, Gonzales, TX, De Witt, TX, Lavaca, TX 7:00 p. m. Heat Advisory — Williamson, TX, Hays, TX, Travis, TX, Bastrop, TX, Lee, TX, Bexar, TX, Comal, TX, Guadalupe, TX, Caldwell, TX, Fayette, TX, Atascosa, TX, Wilson, TX, Karnes, TX, Gonzales, TX, De Witt, TX, Lavaca, TX 7:00 p. m.

Comal County, Texas, United States

Last updated: 3:48 p. m. CDT  ·  Refresh
35°C
Feels like 38°
Partly Cloudy
▲ 36°  /  ▼ 23°
Wind
11 mph SSE
Humidity
42%
Dew Point
21°
Pressure
28,76 inHg
Visibility
10 mi
UV Index
7,9
Cloud Cover
33%
Sunrise
7:16 a. m.
Sunset
7:40 p. m.
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WeatherAI™ Analysis

WeatherAI Analysis: Comal County is currently partly cloudy at 35°C. Dry conditions are expected through the next 24 hours. Atmospheric instability is elevated (CAPE up to 2118 J/kg) — isolated convective development possible. Sunrise: 7:16A. M. · Sunset: 7:40P. M..

Alerts

Heat Advisory
Williamson, TX, Hays, TX, Travis, TX, Bastrop, TX, Lee, TX, Bexar, TX, Comal, TX, Guadalupe, TX, Caldwell, TX, Fayette, TX, Atascosa, TX, Wilson, TX, Karnes, TX, Gonzales, TX, De Witt, TX, Lavaca, TX
Expires 7:00 p. m.
Heat Advisory
Williamson, TX, Hays, TX, Travis, TX, Bastrop, TX, Lee, TX, Bexar, TX, Comal, TX, Guadalupe, TX, Caldwell, TX, Fayette, TX, Atascosa, TX, Wilson, TX, Karnes, TX, Gonzales, TX, De Witt, TX, Lavaca, TX
Expires 7:00 p. m.
37 AQI · Good Dominant: PM2.5 Air Quality
Hourly Forecast · Next 24 Hours
Now
35°
4%
4 p. m.
36°
18%
5 p. m.
36°
18%
6 p. m.
33°
18%
7 p. m.
32°
18%
8 p. m.
31°
18%
9 p. m.
29°
18%
10 p. m.
28°
10%
11 p. m.
27°
8%
12 a. m.
27°
3%
1 a. m.
26°
3%
2 a. m.
26°
3%
3 a. m.
25°
3%
4 a. m.
25°
3%
5 a. m.
23°
3%
6 a. m.
23°
3%
7 a. m.
23°
3%
8 a. m.
24°
3%
9 a. m.
25°
3%
10 a. m.
28°
3%
11 a. m.
29°
3%
12 p. m.
30°
3%
1 p. m.
33°
3%
2 p. m.
33°
3%
7-Day Forecast
Today
36° 23°
Partly Cloudy.
Mon
38° 23°
Partly Cloudy.
Tue
38° 23°
Partly Cloudy.
Wed
35° 23°
Partly Cloudy with a 44% chance of rain.
Thu
35° 22°
Drizzle, 60% chance.
Fri
36° 22°
Clear.
Sat
36° 22°
Clear.
TimeTempConditionsPrecipWindHumidity
Now 35° Partly Cloudy 4% 11 mph SSE 42%
4 p. m. 36° Partly Cloudy 18% 14 mph SSE 41%
5 p. m. 36° Mostly Clear 18% 14 mph SSE 48%
6 p. m. 33° Partly Cloudy 18% 15 mph SSE 60%
7 p. m. 32° Mostly Cloudy 18% 13 mph SE 62%
8 p. m. 31° Mostly Cloudy 18% 12 mph SE 63%
9 p. m. 29° Mostly Cloudy 18% 11 mph SE 65%
10 p. m. 28° Partly Cloudy 10% 11 mph SSE 70%
11 p. m. 27° Partly Cloudy 8% 10 mph SSE 77%
12 a. m. 27° Partly Cloudy 3% 10 mph SSE 83%
1 a. m. 26° Partly Cloudy 3% 9 mph S 86%
2 a. m. 26° Partly Cloudy 3% 8 mph S 89%
3 a. m. 25° Partly Cloudy 3% 7 mph S 92%
4 a. m. 25° Partly Cloudy 3% 7 mph S 92%
5 a. m. 23° Partly Cloudy 3% 6 mph S 91%
6 a. m. 23° Partly Cloudy 3% 6 mph S 91%
7 a. m. 23° Partly Cloudy 3% 7 mph S 88%
8 a. m. 24° Partly Cloudy 3% 8 mph S 83%
9 a. m. 25° Partly Cloudy 3% 9 mph S 79%
10 a. m. 28° Partly Cloudy 3% 9 mph S 73%
11 a. m. 29° Partly Cloudy 3% 9 mph S 67%
12 p. m. 30° Mostly Clear 3% 9 mph S 60%
1 p. m. 33° Mostly Clear 3% 9 mph S 57%
2 p. m. 33° Partly Cloudy 3% 10 mph S 54%
15-Day Forecast
Today
9/13
Partly Cloudy
18%
23°
36°
Mon
9/14
Partly Cloudy
7%
23°
38°
Tue
9/15
Partly Cloudy
3%
23°
38°
Wed
9/16
Partly Cloudy
44%
23°
35°
Thu
9/17
Drizzle
60%
22°
35°
Fri
9/18
Clear
3%
22°
36°
Sat
9/19
Clear
19%
22°
36°
Sun
9/20
Clear
60%
22°
36°
Mon
9/21
Drizzle
60%
22°
37°
Tue
9/22
Drizzle
60%
22°
36°
Wed
9/23
Drizzle
60%
22°
34°
Thu
9/24
Drizzle
60%
22°
33°
Fri
9/25
Drizzle
60%
21°
33°
Sat
9/26
Clear
60%
21°
33°
Sun
9/27
Drizzle
60%
21°
33°
37
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
37 AQI 6.6 µg/m³
O3
Ground-level ozone
29 AQI 31 ppb
3-Day Outlook
DayAQICategoryO₃PM2.5
Mon 37 Good 29 37
Tue 32 Good 29 32
Wed 58 Moderate 32 58
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 dom. sept. 13, 19:00'Z' · F0 · 130 (13 km CONUS/NA)
Hodograph · kt
10 20 30 40 SM
0–1 1–3 3–6 6–9 km
Instability
SBCAPE2778 J/kg
MLCAPE1825 J/kg
MUCAPE2778 J/kg
SBCIN0 J/kg
MLCIN-13 J/kg
Lifted Index-5.3
Kinematics
0–6 km Shear6 kt
0–1 km Shear2 kt
Eff. Shear12 kt
0–1 km SRH-9
0–3 km SRH-8
Eff. SRH-8
Storm Motion142° @ 22 kt
0–1 km EHI-0.2
Composite Parameters
Sig. Tornado0.0
STP (eff)0.0
Supercell0.0
K-Index33.9
Thermo & Levels
PWAT1.67 in
0–3 km LR8.5 °C/km
700–500 LR5.6 °C/km
Total Totals48.2
LCL792 hPa
LFC974 hPa
EL149 hPa
Freezing Lvl15,358 ft