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 PM 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 PM

Comal County, Texas, United States

Last updated: 4:53 PM CDT  ·  Refresh
34°C
Feels like 37°
Partly Cloudy
▲ 36°  /  ▼ 23°
Wind
12 mph SSE
Humidity
42%
Dew Point
20°
Pressure
28.76 inHg
Visibility
10 mi
UV Index
6.7
Cloud Cover
31%
Sunrise
7:16 AM
Sunset
7:40 PM
Drag to pan · double-click to forecast a point
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 2352 J/kg) — isolated convective development possible. Sunrise: 7:16AM · Sunset: 7:40PM.

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 PM
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 PM
37 AQI · Good Dominant: PM2.5 Air Quality
Hourly Forecast · Next 24 Hours
Now
34°
8%
5 PM
35°
21%
6 PM
33°
25%
7 PM
31°
23%
8 PM
30°
35%
9 PM
29°
18%
10 PM
28°
11%
11 PM
27°
9%
12 AM
27°
3%
1 AM
26°
3%
2 AM
26°
3%
3 AM
26°
4%
4 AM
26°
4%
5 AM
23°
4%
6 AM
23°
4%
7 AM
24°
4%
8 AM
25°
8%
9 AM
26°
8%
10 AM
27°
8%
11 AM
30°
8%
12 PM
31°
8%
1 PM
34°
8%
2 PM
34°
8%
3 PM
34°
8%
7-Day Forecast
Today
36° 23°
Partly Cloudy with a 23% chance of rain.
Mon
38° 23°
Partly Cloudy.
Tue
39° 22°
Mostly Clear.
Wed
36° 23°
Mostly Clear with a 44% chance of rain.
Thu
35° 22°
Drizzle, 60% chance.
Fri
36° 21°
Partly Cloudy.
Sat
36° 20°
Clear.
TimeTempConditionsPrecipWindHumidity
Now 34° Partly Cloudy 8% 12 mph SSE 42%
5 PM 35° Mostly Clear 21% 14 mph SSE 48%
6 PM 33° Partly Cloudy 25% 14 mph SE 60%
7 PM 31° Mostly Cloudy 23% 15 mph SE 60%
8 PM 30° Mostly Cloudy 35% 11 mph SE 60%
9 PM 29° Mostly Cloudy 18% 10 mph SE 62%
10 PM 28° Partly Cloudy 11% 10 mph SSE 68%
11 PM 27° Partly Cloudy 9% 10 mph SSE 75%
12 AM 27° Partly Cloudy 3% 9 mph SSE 82%
1 AM 26° Mostly Cloudy 3% 8 mph S 85%
2 AM 26° Mostly Cloudy 3% 8 mph S 88%
3 AM 26° Mostly Cloudy 4% 8 mph S 91%
4 AM 26° Partly Cloudy 4% 7 mph S 90%
5 AM 23° Partly Cloudy 4% 7 mph S 88%
6 AM 23° Partly Cloudy 4% 6 mph S 87%
7 AM 24° Partly Cloudy 4% 7 mph S 84%
8 AM 25° Partly Cloudy 8% 8 mph S 78%
9 AM 26° Partly Cloudy 8% 8 mph S 75%
10 AM 27° Partly Cloudy 8% 8 mph S 70%
11 AM 30° Partly Cloudy 8% 8 mph S 64%
12 PM 31° Partly Cloudy 8% 8 mph S 59%
1 PM 34° Partly Cloudy 8% 9 mph S 57%
2 PM 34° Partly Cloudy 8% 10 mph SSE 55%
3 PM 34° Mostly Cloudy 8% 10 mph SSE 54%
15-Day Forecast
Today
9/13
Partly Cloudy
23%
23°
36°
Mon
9/14
Partly Cloudy
12%
23°
38°
Tue
9/15
Mostly Clear
3%
22°
39°
Wed
9/16
Mostly Clear
44%
23°
36°
Thu
9/17
Drizzle
60%
22°
35°
Fri
9/18
Partly Cloudy
10%
21°
36°
Sat
9/19
Clear
17%
20°
36°
Sun
9/20
Mostly Cloudy
43%
21°
36°
Mon
9/21
Drizzle
68%
22°
35°
Tue
9/22
Drizzle
68%
21°
34°
Wed
9/23
Drizzle
67%
21°
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 Sun Sep 13, 20:00'Z' · F0 · 130 (13 km CONUS/NA)
Hodograph · kt
10 20 30 40 SM
0–1 1–3 3–6 6–9 km
Instability
SBCAPE2176 J/kg
MLCAPE1575 J/kg
MUCAPE3962 J/kg
SBCIN-8 J/kg
MLCIN-61 J/kg
Lifted Index-4.7
Kinematics
0–6 km Shear6 kt
0–1 km Shear9 kt
Eff. Shear18 kt
0–1 km SRH-8
0–3 km SRH35
Eff. SRH35
Storm Motion111° @ 21 kt
0–1 km EHI-0.1
Composite Parameters
Sig. Tornado0.0
STP (eff)0.0
Supercell0.0
K-Index35.0
Thermo & Levels
PWAT1.72 in
0–3 km LR8.3 °C/km
700–500 LR5.5 °C/km
Total Totals47.7
LCL791 hPa
LFC777 hPa
EL160 hPa
Freezing Lvl15,203 ft