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

Austin, Texas

Last updated: 4:52 PM CDT  ·  Refresh
36°C
Feels like 39°
Partly Cloudy
▲ 37°  /  ▼ 24°
Wind
9 mph SSE
Humidity
41%
Dew Point
21°
Pressure
29.32 inHg
Visibility
10 mi
UV Index
6.6
Cloud Cover
36%
Sunrise
7:13 AM
Sunset
7:38 PM
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WeatherAI™ Analysis

WeatherAI Analysis: Austin is currently partly cloudy at 36°C. Dry conditions are expected through the next 24 hours. Atmospheric instability is elevated (CAPE up to 2330 J/kg) — isolated convective development possible. Sunrise: 7:13AM · 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
33 AQI · Good Dominant: PM2.5 Air Quality
Hourly Forecast · Next 24 Hours
Now
36°
5%
5 PM
33°
25%
6 PM
31°
25%
7 PM
31°
18%
8 PM
30°
6%
9 PM
29°
6%
10 PM
29°
6%
11 PM
28°
3%
12 AM
27°
3%
1 AM
27°
3%
2 AM
27°
3%
3 AM
26°
3%
4 AM
26°
3%
5 AM
24°
4%
6 AM
24°
4%
7 AM
26°
10%
8 AM
26°
13%
9 AM
27°
14%
10 AM
28°
24%
11 AM
31°
24%
12 PM
32°
24%
1 PM
34°
25%
2 PM
34°
25%
3 PM
34°
25%
7-Day Forecast
Today
37° 24°
Partly Cloudy.
Mon
38° 24°
Partly Cloudy with a 24% chance of rain.
Tue
39° 23°
Partly Cloudy.
Wed
36° 24°
Mostly Clear.
Thu
36° 24°
Mostly Cloudy with a 24% chance of rain.
Fri
37° 22°
Clear.
Sat
37° 21°
Clear.
TimeTempConditionsPrecipWindHumidity
Now 36° Partly Cloudy 5% 9 mph SSE 41%
5 PM 33° Rain 25% 13 mph SSE 47%
6 PM 31° Mostly Cloudy 25% 11 mph SSE 59%
7 PM 31° Mostly Cloudy 18% 10 mph SSE 61%
8 PM 30° Mostly Cloudy 6% 9 mph SSE 62%
9 PM 29° Mostly Cloudy 6% 10 mph SSE 64%
10 PM 29° Mostly Cloudy 6% 9 mph SSE 67%
11 PM 28° Partly Cloudy 3% 10 mph SSE 70%
12 AM 27° Partly Cloudy 3% 9 mph S 74%
1 AM 27° Partly Cloudy 3% 8 mph S 76%
2 AM 27° Partly Cloudy 3% 7 mph S 78%
3 AM 26° Partly Cloudy 3% 6 mph S 80%
4 AM 26° Partly Cloudy 3% 6 mph S 80%
5 AM 24° Mostly Clear 4% 5 mph S 80%
6 AM 24° Partly Cloudy 4% 5 mph S 80%
7 AM 26° Mostly Clear 10% 5 mph S 77%
8 AM 26° Mostly Clear 13% 6 mph S 72%
9 AM 27° Mostly Clear 14% 6 mph S 69%
10 AM 28° Mostly Clear 24% 6 mph S 64%
11 AM 31° Mostly Clear 24% 6 mph S 59%
12 PM 32° Mostly Clear 24% 7 mph S 53%
1 PM 34° Partly Cloudy 25% 7 mph S 53%
2 PM 34° Partly Cloudy 25% 8 mph SSE 53%
3 PM 34° Partly Cloudy 25% 9 mph SSE 54%
15-Day Forecast
Today
9/13
Partly Cloudy
18%
24°
37°
Mon
9/14
Partly Cloudy
24%
24°
38°
Tue
9/15
Partly Cloudy
7%
23°
39°
Wed
9/16
Mostly Clear
16%
24°
36°
Thu
9/17
Mostly Cloudy
24%
24°
36°
Fri
9/18
Clear
10%
22°
37°
Sat
9/19
Clear
17%
21°
37°
Sun
9/20
Clear
43%
22°
36°
Mon
9/21
Drizzle
60%
23°
36°
Tue
9/22
Drizzle
68%
21°
34°
Wed
9/23
Drizzle
67%
21°
33°
Thu
9/24
Drizzle
60%
22°
33°
Fri
9/25
Drizzle
60%
21°
33°
Sat
9/26
Drizzle
60%
21°
33°
Sun
9/27
Drizzle
60%
21°
33°
33
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
33 AQI 5.9 µg/m³
O3
Ground-level ozone
31 AQI 35 ppb
3-Day Outlook
DayAQICategoryO₃PM2.5
Mon 33 Good 31 33
Tue 31 Good 31 25
Wed 51 Moderate 34 51
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
SBCAPE2704 J/kg
MLCAPE1776 J/kg
MUCAPE4654 J/kg
SBCIN-3 J/kg
MLCIN-104 J/kg
Lifted Index-5.1
Kinematics
0–6 km Shear8 kt
0–1 km Shear10 kt
Eff. Shear15 kt
0–1 km SRH-18
0–3 km SRH10
Eff. SRH10
Storm Motion127° @ 22 kt
0–1 km EHI-0.3
Composite Parameters
Sig. Tornado0.0
STP (eff)0.0
Supercell0.0
K-Index35.5
Thermo & Levels
PWAT1.89 in
0–3 km LR8.4 °C/km
700–500 LR5.5 °C/km
Total Totals47.5
LCL808 hPa
LFC795 hPa
EL149 hPa
Freezing Lvl15,751 ft