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

Atascosa County, Texas, United States

Last updated: 3:49 PM CDT  ·  Refresh
37°C
Feels like 41°
Partly Cloudy
▲ 38°  /  ▼ 24°
Wind
13 mph SE
Humidity
39%
Dew Point
21°
Pressure
29,47 inHg
Visibility
10 mi
UV Index
7,9
Cloud Cover
35%
Sunrise
7:17 AM
Sunset
7:41 PM
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WeatherAI™ Analysis

WeatherAI Analysis: Atascosa County is currently partly cloudy at 37°C. Dry conditions are expected through the next 24 hours. Atmospheric instability is elevated (CAPE up to 2435 J/kg) — isolated convective development possible. Sunrise: 7:17AM · Sunset: 7:41PM.

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
42 AQI · Good Dominant: PM2.5 Air Quality
Hourly Forecast · Next 24 Hours
Now
37°
4%
4 PM
37°
5%
5 PM
38°
5%
6 PM
37°
8%
7 PM
34°
8%
8 PM
33°
5%
9 PM
30°
5%
10 PM
29°
5%
11 PM
28°
5%
12 AM
28°
3%
1 AM
27°
3%
2 AM
27°
3%
3 AM
26°
3%
4 AM
26°
3%
5 AM
24°
3%
6 AM
24°
3%
7 AM
24°
3%
8 AM
26°
3%
9 AM
26°
3%
10 AM
29°
3%
11 AM
31°
3%
12 PM
31°
3%
1 PM
34°
3%
2 PM
34°
3%
7-Day Forecast
Today
38° 24°
Mostly Clear.
Mon
39° 24°
Mostly Cloudy.
Tue
39° 23°
Mostly Clear.
Wed
37° 23°
Partly Cloudy with a 44% chance of rain.
Thu
36° 24°
Drizzle, 60% chance.
Fri
36° 22°
Clear.
Sat
37° 21°
Clear.
TimeTempConditionsPrecipWindHumidity
Now 37° Partly Cloudy 4% 13 mph SE 39%
4 PM 37° Mostly Clear 5% 15 mph SE 40%
5 PM 38° Mostly Clear 5% 17 mph SE 44%
6 PM 37° Mostly Clear 8% 17 mph SE 48%
7 PM 34° Mostly Clear 8% 15 mph SE 54%
8 PM 33° Partly Cloudy 5% 15 mph SE 61%
9 PM 30° Mostly Cloudy 5% 14 mph SE 68%
10 PM 29° Partly Cloudy 5% 12 mph SE 72%
11 PM 28° Partly Cloudy 5% 11 mph SE 75%
12 AM 28° Mostly Clear 3% 9 mph SE 78%
1 AM 27° Mostly Clear 3% 9 mph SSE 80%
2 AM 27° Partly Cloudy 3% 8 mph SSE 84%
3 AM 26° Partly Cloudy 3% 6 mph SE 87%
4 AM 26° Partly Cloudy 3% 5 mph SE 88%
5 AM 24° Mostly Cloudy 3% 5 mph SE 88%
6 AM 24° Mostly Cloudy 3% 5 mph SE 88%
7 AM 24° Mostly Cloudy 3% 6 mph SE 85%
8 AM 26° Mostly Cloudy 3% 7 mph SSE 77%
9 AM 26° Mostly Cloudy 3% 8 mph SSE 71%
10 AM 29° Mostly Cloudy 3% 8 mph SSE 66%
11 AM 31° Partly Cloudy 3% 8 mph SSE 60%
12 PM 31° Partly Cloudy 3% 8 mph SSE 54%
1 PM 34° Partly Cloudy 3% 9 mph SE 53%
2 PM 34° Mostly Cloudy 3% 10 mph SE 52%
15-Day Forecast
Today
9/13
Mostly Clear
8%
24°
38°
Mon
9/14
Mostly Cloudy
3%
24°
39°
Tue
9/15
Mostly Clear
8%
23°
39°
Wed
9/16
Partly Cloudy
44%
23°
37°
Thu
9/17
Drizzle
60%
24°
36°
Fri
9/18
Clear
9%
22°
36°
Sat
9/19
Clear
9%
21°
37°
Sun
9/20
Clear
25%
22°
37°
Mon
9/21
Drizzle
60%
22°
36°
Tue
9/22
Drizzle
60%
23°
38°
Wed
9/23
Drizzle
60%
22°
34°
Thu
9/24
Clear
60%
23°
34°
Fri
9/25
Drizzle
60%
22°
34°
Sat
9/26
Clear
25%
22°
34°
Sun
9/27
Drizzle
60%
22°
34°
42
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
42 AQI 7.6 µg/m³
O3
Ground-level ozone
27 AQI 30 ppb
3-Day Outlook
DayAQICategoryO₃PM2.5
Mon 42 Good 27 42
Tue 41 Good 28 41
Wed 65 Moderate 31 65
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
SBCAPE2562 J/kg
MLCAPE1594 J/kg
MUCAPE2562 J/kg
SBCIN-0 J/kg
MLCIN-21 J/kg
Lifted Index-5.2
Kinematics
0–6 km Shear3 kt
0–1 km Shear3 kt
Eff. Shear5 kt
0–1 km SRH-5
0–3 km SRH-12
Eff. SRH-12
Storm Motion95° @ 17 kt
0–1 km EHI-0.1
Composite Parameters
Sig. Tornado0.0
STP (eff)0.0
Supercell0.0
K-Index36.5
Thermo & Levels
PWAT1.74 in
0–3 km LR8.9 °C/km
700–500 LR5.4 °C/km
Total Totals47.8
LCL794 hPa
LFC793 hPa
EL155 hPa
Freezing Lvl16,306 ft