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

Lavaca County, Texas, United States

Last updated: 3:49 PM CDT  ·  Refresh
33°C
Feels like 46°
Mostly Cloudy
▲ 34°  /  ▼ 23°
Wind
14 mph SSE
Humidity
73%
Dew Point
24°
Pressure
29,70 inHg
Visibility
10 mi
UV Index
5,5
Cloud Cover
75%
Sunrise
7:11 AM
Sunset
7:35 PM
Drag to pan · double-click to forecast a point
WeatherAI™ Analysis

WeatherAI Analysis: Lavaca County is currently mostly cloudy at 33°C. Dry conditions are expected through the next 24 hours. Atmospheric instability is elevated (CAPE up to 3081 J/kg) — isolated convective development possible. Sunrise: 7:11AM · Sunset: 7:35PM.

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
26 AQI · Good Dominant: PM2.5 Air Quality
Hourly Forecast · Next 24 Hours
Now
33°
17%
4 PM
32°
19%
5 PM
33°
3%
6 PM
32°
3%
7 PM
31°
3%
8 PM
30°
3%
9 PM
28°
3%
10 PM
27°
3%
11 PM
26°
3%
12 AM
26°
3%
1 AM
25°
10%
2 AM
25°
23%
3 AM
24°
24%
4 AM
24°
28%
5 AM
23°
41%
6 AM
23°
28%
7 AM
24°
33%
8 AM
26°
29%
9 AM
28°
30%
10 AM
30°
30%
11 AM
31°
19%
12 PM
31°
12%
1 PM
32°
20%
2 PM
32°
24%
7-Day Forecast
Today
34° 23°
Overcast.
Mon
37° 23°
Mostly Clear with a 30% chance of rain.
Tue
39° 23°
Partly Cloudy.
Wed
34° 23°
Overcast with a 43% chance of rain.
Thu
36° 23°
Drizzle, 60% chance.
Fri
37° 22°
Clear.
Sat
37° 22°
Clear.
TimeTempConditionsPrecipWindHumidity
Now 33° Mostly Cloudy 17% 14 mph SSE 73%
4 PM 32° Overcast 19% 15 mph SSE 67%
5 PM 33° Overcast 3% 14 mph SSE 64%
6 PM 32° Overcast 3% 11 mph SSE 63%
7 PM 31° Overcast 3% 9 mph SSE 68%
8 PM 30° Overcast 3% 8 mph SE 74%
9 PM 28° Partly Cloudy 3% 8 mph SE 78%
10 PM 27° Partly Cloudy 3% 7 mph SE 82%
11 PM 26° Mostly Clear 3% 6 mph SE 84%
12 AM 26° Mostly Clear 3% 5 mph SE 87%
1 AM 25° Mostly Clear 10% 4 mph SE 88%
2 AM 25° Partly Cloudy 23% 4 mph SE 88%
3 AM 24° Haze 24% 3 mph SE 89%
4 AM 24° Fog 28% 2 mph ESE 90%
5 AM 23° Fog 41% 2 mph E 91%
6 AM 23° Fog 28% 2 mph ENE 92%
7 AM 24° Partly Cloudy 33% 3 mph E 88%
8 AM 26° Mostly Clear 29% 3 mph SE 81%
9 AM 28° Mostly Clear 30% 4 mph SSE 75%
10 AM 30° Mostly Clear 30% 5 mph SSE 70%
11 AM 31° Partly Cloudy 19% 6 mph SE 66%
12 PM 31° Mostly Cloudy 12% 7 mph SE 62%
1 PM 32° Partly Cloudy 20% 7 mph SE 62%
2 PM 32° Partly Cloudy 24% 6 mph SE 62%
15-Day Forecast
Today
9/13
Overcast
17%
23°
34°
Mon
9/14
Mostly Clear
30%
23°
37°
Tue
9/15
Partly Cloudy
18%
23°
39°
Wed
9/16
Overcast
43%
23°
34°
Thu
9/17
Drizzle
60%
23°
36°
Fri
9/18
Clear
3%
22°
37°
Sat
9/19
Clear
9%
22°
37°
Sun
9/20
Clear
60%
22°
36°
Mon
9/21
Drizzle
60%
23°
36°
Tue
9/22
Drizzle
60%
22°
36°
Wed
9/23
Drizzle
60%
22°
34°
Thu
9/24
Drizzle
60%
22°
34°
Fri
9/25
Drizzle
60%
22°
34°
Sat
9/26
Clear
60%
21°
34°
Sun
9/27
Drizzle
60%
21°
34°
26
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
26 AQI 4.6 µg/m³
O3
Ground-level ozone
20 AQI 23 ppb
3-Day Outlook
DayAQICategoryO₃PM2.5
Mon 26 Good 20 26
Tue 23 Good 23 21
Wed 46 Good 26 46
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 dim. 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
SBCAPE3962 J/kg
MLCAPE3249 J/kg
MUCAPE4131 J/kg
SBCIN-22 J/kg
MLCIN-34 J/kg
Lifted Index-8.0
Kinematics
0–6 km Shear6 kt
0–1 km Shear2 kt
Eff. Shear13 kt
0–1 km SRH-1
0–3 km SRH44
Eff. SRH44
Storm Motion99° @ 16 kt
0–1 km EHI-0.0
Composite Parameters
Sig. Tornado0.0
STP (eff)0.0
Supercell0.0
K-Index39.4
Thermo & Levels
PWAT2.34 in
0–3 km LR7.5 °C/km
700–500 LR5.9 °C/km
Total Totals50.5
LCL882 hPa
LFC856 hPa
EL135 hPa
Freezing Lvl16,099 ft