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

Lee County, Texas, United States

Last updated: 3:51 PM CDT  ·  Refresh
96°F
Feels like 103°
Partly Cloudy
▲ 97°  /  ▼ 74°
Wind
9 mph S
Humidity
42%
Dew Point
71°
Pressure
29.50 inHg
Visibility
10 mi
UV Index
7.7
Cloud Cover
36%
Sunrise
7:10 AM
Sunset
7:35 PM
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WeatherAI™ Analysis

WeatherAI Analysis: Lee County is currently partly cloudy at 96°F. Dry conditions are expected through the next 24 hours. Atmospheric instability is elevated (CAPE up to 2537 J/kg) — isolated convective development possible. Sunrise: 7:10AM · 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
27 AQI · Good Dominant: PM2.5 Air Quality
Hourly Forecast · Next 24 Hours
Now
96°
13%
4 PM
96°
21%
5 PM
93°
9%
6 PM
88°
24%
7 PM
85°
23%
8 PM
84°
5%
9 PM
82°
5%
10 PM
81°
5%
11 PM
80°
5%
12 AM
78°
5%
1 AM
78°
5%
2 AM
78°
9%
3 AM
78°
15%
4 AM
77°
18%
5 AM
74°
15%
6 AM
74°
15%
7 AM
76°
27%
8 AM
78°
16%
9 AM
80°
16%
10 AM
85°
17%
11 AM
86°
17%
12 PM
88°
13%
1 PM
92°
13%
2 PM
93°
13%
7-Day Forecast
Today
97° 74°
Partly Cloudy with a 24% chance of rain.
Mon
100° 74°
Partly Cloudy.
Tue
100° 72°
Mostly Clear.
Wed
95° 71°
Mostly Cloudy with a 38% chance of rain.
Thu
96° 72°
Clear.
Fri
98° 71°
Clear.
Sat
97° 70°
Clear.
TimeTempConditionsPrecipWindHumidity
Now 96° Partly Cloudy 13% 9 mph S 42%
4 PM 96° Partly Cloudy 21% 10 mph SSE 45%
5 PM 93° Partly Cloudy 9% 14 mph S 56%
6 PM 88° Mostly Cloudy 24% 14 mph SSE 64%
7 PM 85° Mostly Cloudy 23% 11 mph SSE 68%
8 PM 84° Partly Cloudy 5% 9 mph SSE 71%
9 PM 82° Partly Cloudy 5% 9 mph SSE 74%
10 PM 81° Mostly Clear 5% 9 mph SSE 78%
11 PM 80° Mostly Clear 5% 8 mph S 80%
12 AM 78° Mostly Clear 5% 8 mph SSE 82%
1 AM 78° Mostly Clear 5% 6 mph S 84%
2 AM 78° Mostly Clear 9% 5 mph SSE 86%
3 AM 78° Mostly Clear 15% 4 mph S 88%
4 AM 77° Partly Cloudy 18% 4 mph S 89%
5 AM 74° Partly Cloudy 15% 4 mph SSE 89%
6 AM 74° Partly Cloudy 15% 3 mph SSE 89%
7 AM 76° Mostly Clear 27% 4 mph SSE 84%
8 AM 78° Mostly Clear 16% 5 mph SSE 78%
9 AM 80° Mostly Clear 16% 6 mph SSE 72%
10 AM 85° Mostly Clear 17% 6 mph S 67%
11 AM 86° Mostly Clear 17% 6 mph S 63%
12 PM 88° Mostly Clear 13% 6 mph S 59%
1 PM 92° Partly Cloudy 13% 7 mph SSE 56%
2 PM 93° Partly Cloudy 13% 7 mph SSE 55%
15-Day Forecast
Today
9/13
Partly Cloudy
24%
74°
97°
Mon
9/14
Partly Cloudy
16%
74°
100°
Tue
9/15
Mostly Clear
3%
72°
100°
Wed
9/16
Mostly Cloudy
38%
71°
95°
Thu
9/17
Clear
18%
72°
96°
Fri
9/18
Clear
3%
71°
98°
Sat
9/19
Clear
19%
70°
97°
Sun
9/20
Clear
60%
72°
96°
Mon
9/21
Drizzle
60%
72°
96°
Tue
9/22
Drizzle
60%
69°
94°
Wed
9/23
Drizzle
60%
70°
92°
Thu
9/24
Clear
60%
71°
92°
Fri
9/25
Drizzle
60%
70°
91°
Sat
9/26
Clear
25%
69°
91°
Sun
9/27
Drizzle
60%
69°
92°
27
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
27 AQI 4.8 µg/m³
O3
Ground-level ozone
21 AQI 24 ppb
3-Day Outlook
DayAQICategoryO₃PM2.5
Mon 27 Good 21 27
Tue 23 Good 23 21
Wed 28 Good 26 28
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
SBCAPE3100 J/kg
MLCAPE2504 J/kg
MUCAPE3100 J/kg
SBCIN0 J/kg
MLCIN-12 J/kg
Lifted Index-5.5
Kinematics
0–6 km Shear3 kt
0–1 km Shear2 kt
Eff. Shear14 kt
0–1 km SRH-7
0–3 km SRH-4
Eff. SRH-4
Storm Motion162° @ 21 kt
0–1 km EHI-0.1
Composite Parameters
Sig. Tornado0.0
STP (eff)0.0
Supercell0.0
K-Index36.8
Thermo & Levels
PWAT1.95 in
0–3 km LR8.5 °C/km
700–500 LR5.3 °C/km
Total Totals47.5
LCL818 hPa
LFC999 hPa
EL145 hPa
Freezing Lvl16,296 ft