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

Guadalupe County, Texas, United States

Last updated: 3:52 PM CDT  ·  Refresh
37°C
Feels like 39°
Partly Cloudy
▲ 37°  /  ▼ 23°
Wind
11 mph SSE
Humidity
38%
Dew Point
20°
Pressure
29.32 inHg
Visibility
10 mi
UV Index
7.2
Cloud Cover
53%
Sunrise
7:14 AM
Sunset
7:38 PM
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WeatherAI™ Analysis

WeatherAI Analysis: Guadalupe County is currently partly cloudy at 36°C. Dry conditions are expected through the next 24 hours. Atmospheric instability is elevated (CAPE up to 2424 J/kg) — isolated convective development possible. Sunrise: 7:14AM · Sunset: 7:38PM.

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
29 AQI · Good Dominant: PM2.5 Air Quality
Hourly Forecast · Next 24 Hours
Now
37°
4%
4 PM
36°
5%
5 PM
36°
5%
6 PM
33°
5%
7 PM
32°
5%
8 PM
31°
5%
9 PM
29°
5%
10 PM
28°
5%
11 PM
27°
5%
12 AM
27°
5%
1 AM
26°
5%
2 AM
26°
5%
3 AM
26°
5%
4 AM
26°
5%
5 AM
23°
5%
6 AM
23°
5%
7 AM
24°
5%
8 AM
25°
5%
9 AM
26°
5%
10 AM
29°
5%
11 AM
30°
3%
12 PM
31°
3%
1 PM
33°
3%
2 PM
33°
3%
7-Day Forecast
Today
37° 23°
Mostly Cloudy.
Mon
39° 23°
Partly Cloudy.
Tue
39° 22°
Mostly Clear.
Wed
35° 24°
Partly Cloudy with a 47% chance of rain.
Thu
36° 23°
Drizzle, 50% chance.
Fri
37° 22°
Clear.
Sat
37° 22°
Clear.
TimeTempConditionsPrecipWindHumidity
Now 37° Partly Cloudy 4% 11 mph SSE 38%
4 PM 36° Partly Cloudy 5% 14 mph SSE 45%
5 PM 36° Overcast 5% 14 mph SSE 54%
6 PM 33° Overcast 5% 15 mph SSE 58%
7 PM 32° Overcast 5% 12 mph SSE 62%
8 PM 31° Overcast 5% 11 mph SSE 66%
9 PM 29° Mostly Cloudy 5% 10 mph SE 70%
10 PM 28° Mostly Cloudy 5% 9 mph SSE 75%
11 PM 27° Partly Cloudy 5% 8 mph SSE 79%
12 AM 27° Partly Cloudy 5% 8 mph SSE 82%
1 AM 26° Partly Cloudy 5% 7 mph S 85%
2 AM 26° Mostly Clear 5% 5 mph S 87%
3 AM 26° Mostly Clear 5% 5 mph S 88%
4 AM 26° Partly Cloudy 5% 5 mph SSW 89%
5 AM 23° Partly Cloudy 5% 4 mph SSW 89%
6 AM 23° Partly Cloudy 5% 4 mph SSW 89%
7 AM 24° Partly Cloudy 5% 4 mph S 86%
8 AM 25° Mostly Clear 5% 6 mph S 80%
9 AM 26° Mostly Clear 5% 7 mph S 76%
10 AM 29° Clear 5% 7 mph S 70%
11 AM 30° Clear 3% 8 mph S 63%
12 PM 31° Clear 3% 8 mph S 57%
1 PM 33° Mostly Clear 3% 9 mph S 56%
2 PM 33° Partly Cloudy 3% 10 mph SSE 56%
15-Day Forecast
Today
9/13
Mostly Cloudy
5%
23°
37°
Mon
9/14
Partly Cloudy
7%
23°
39°
Tue
9/15
Mostly Clear
8%
22°
39°
Wed
9/16
Partly Cloudy
47%
24°
35°
Thu
9/17
Drizzle
50%
23°
36°
Fri
9/18
Clear
3%
22°
37°
Sat
9/19
Clear
19%
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°
33°
Sat
9/26
Drizzle
60%
21°
33°
Sun
9/27
Drizzle
60%
21°
33°
29
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
29 AQI 5.2 µg/m³
O3
Ground-level ozone
25 AQI 28 ppb
3-Day Outlook
DayAQICategoryO₃PM2.5
Mon 29 Good 25 29
Tue 26 Good 26 24
Wed 54 Moderate 29 54
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, 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
SBCAPE2281 J/kg
MLCAPE1389 J/kg
MUCAPE2281 J/kg
SBCIN0 J/kg
MLCIN-13 J/kg
Lifted Index-4.6
Kinematics
0–6 km Shear2 kt
0–1 km Shear3 kt
Eff. Shear9 kt
0–1 km SRH-9
0–3 km SRH-14
Eff. SRH-14
Storm Motion126° @ 20 kt
0–1 km EHI-0.1
Composite Parameters
Sig. Tornado0.0
STP (eff)0.0
Supercell0.0
K-Index36.2
Thermo & Levels
PWAT1.77 in
0–3 km LR8.9 °C/km
700–500 LR5.4 °C/km
Total Totals48.1
LCL786 hPa
LFC993 hPa
EL160 hPa
Freezing Lvl15,938 ft