Heat Advisory — Llano, TX, Burnet, TX, 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

Hays County, Texas, United States

Last updated: 10:08 PM CDT  ·  Refresh
31°C
Feels like 32°
Clear
▲ 38°  /  ▼ 22°
Wind
5 mph S
Humidity
50%
Dew Point
18°
Pressure
28.87 inHg
Visibility
10 mi
UV Index
0.0
Cloud Cover
1%
Sunrise
7:02 AM
Sunset
8:06 PM
Drag to pan · double-click to forecast a point
WeatherAI™ Analysis

WeatherAI Analysis: Hays County is currently clear at 31°C. Dry conditions are expected through the next 24 hours. Atmospheric instability is elevated (CAPE up to 1271 J/kg) — isolated convective development possible. Sunrise: 7:02AM · Sunset: 8:06PM.

Alerts

Heat Advisory
Llano, TX, Burnet, TX, 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
60 AQI · Moderate Dominant: PM2.5 Air Quality
Hourly Forecast · Next 24 Hours
Now
31°
3%
11 PM
31°
7%
12 AM
29°
7%
1 AM
28°
3%
2 AM
27°
3%
3 AM
26°
3%
4 AM
26°
3%
5 AM
26°
3%
6 AM
22°
3%
7 AM
22°
3%
8 AM
24°
3%
9 AM
28°
8%
10 AM
30°
8%
11 AM
32°
8%
12 PM
34°
8%
1 PM
36°
9%
2 PM
38°
9%
3 PM
39°
9%
4 PM
39°
12%
5 PM
41°
12%
6 PM
39°
12%
7 PM
38°
13%
8 PM
37°
13%
9 PM
35°
14%
7-Day Forecast
Tonight
38° 22°
Clear.
Sat
41° 22°
Mostly Clear.
Sun
41° 23°
Partly Cloudy.
Mon
40° 22°
Clear.
Tue
41° 23°
Clear.
Wed
41° 23°
Drizzle, 43% chance.
Thu
39° 23°
Drizzle, 52% chance.
TimeTempConditionsPrecipWindHumidity
Now 31° Clear 3% 5 mph S 50%
11 PM 31° Clear 7% 8 mph S 50%
12 AM 29° Clear 7% 8 mph S 58%
1 AM 28° Clear 3% 8 mph SSW 66%
2 AM 27° Mostly Clear 3% 7 mph SSW 70%
3 AM 26° Partly Cloudy 3% 7 mph SSW 73%
4 AM 26° Partly Cloudy 3% 7 mph SSW 74%
5 AM 26° Partly Cloudy 3% 7 mph SW 76%
6 AM 22° Partly Cloudy 3% 7 mph SW 77%
7 AM 22° Partly Cloudy 3% 7 mph SW 76%
8 AM 24° Partly Cloudy 3% 8 mph SW 68%
9 AM 28° Partly Cloudy 8% 8 mph SW 56%
10 AM 30° Mostly Clear 8% 8 mph SW 45%
11 AM 32° Mostly Clear 8% 6 mph SW 38%
12 PM 34° Partly Cloudy 8% 5 mph SSW 32%
1 PM 36° Clear 9% 5 mph S 28%
2 PM 38° Clear 9% 6 mph SSE 26%
3 PM 39° Clear 9% 8 mph SSE 25%
4 PM 39° Clear 12% 9 mph SSE 24%
5 PM 41° Clear 12% 9 mph SSE 24%
6 PM 39° Clear 12% 9 mph SSE 25%
7 PM 38° Clear 13% 8 mph SSE 25%
8 PM 37° Mostly Clear 13% 9 mph SSE 28%
9 PM 35° Mostly Clear 14% 10 mph SSE 30%
15-Day Forecast
Today
8/21
Clear
3%
22°
38°
Sat
8/22
Mostly Clear
14%
22°
41°
Sun
8/23
Partly Cloudy
3%
23°
41°
Mon
8/24
Clear
3%
22°
40°
Tue
8/25
Clear
8%
23°
41°
Wed
8/26
Drizzle
43%
23°
41°
Thu
8/27
Drizzle
52%
23°
39°
Fri
8/28
Clear
28%
24°
40°
Sat
8/29
Clear
18%
22°
40°
Sun
8/30
Clear
19%
23°
40°
Mon
8/31
Clear
3%
22°
38°
Tue
9/1
Clear
25%
24°
40°
Wed
9/2
Drizzle
60%
23°
39°
Thu
9/3
Clear
25%
24°
38°
Fri
9/4
Clear
25%
23°
38°
60
Moderate
U.S. Air Quality Index · Dominant: PM2.5
50 100 150 200

Air quality is acceptable. Unusually sensitive people should consider limiting prolonged outdoor exertion.

Pollutant Breakdown · Today
PM2.5
Fine particulate matter
Dominant
60 AQI 14.0 µg/m³
O3
Ground-level ozone
39 AQI 43 ppb
3-Day Outlook
DayAQICategoryO₃PM2.5
Today 60 Moderate 39 60
Sun 60 Moderate 44 60
Mon 58 Moderate 38 58
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 Sat Aug 22, 01:00'Z' · F0 · 130 (13 km CONUS/NA)
Hodograph · kt
10 20 30 40 SM
0–1 1–3 3–6 6–9 km
Instability
SBCAPE516 J/kg
MLCAPE536 J/kg
MUCAPE1282 J/kg
SBCIN-474 J/kg
MLCIN-196 J/kg
Lifted Index-1.4
Kinematics
0–6 km Shear19 kt
0–1 km Shear4 kt
Eff. Shear19 kt
0–1 km SRH-11
0–3 km SRH15
Eff. SRH26
Storm Motion117° @ 19 kt
0–1 km EHI-0.0
Composite Parameters
Sig. Tornado0.0
STP (eff)0.0
Supercell0.0
K-Index34.0
Thermo & Levels
PWAT1.46 in
0–3 km LR6.8 °C/km
700–500 LR6.2 °C/km
Total Totals48.5
LCL807 hPa
LFC593 hPa
EL214 hPa
Freezing Lvl15,381 ft