Heat Advisory — Houston, TX, Trinity, TX, Madison, TX, Walker, TX, San Jacinto, TX, Polk, TX, Burleson, TX, Brazos, TX, Washington, TX, Grimes, TX, Montgomery, TX, Northern Liberty, TX, Colorado, TX, Austin, TX, Waller, TX, Inland Harris, TX, Wharton, TX, Fort Bend, TX, Inland Jackson, TX, Inland Matagorda, TX, Inland Brazoria, TX, Coastal Jackson, TX 6:00 PM Heat Advisory — Houston, TX, Trinity, TX, Madison, TX, Walker, TX, San Jacinto, TX, Polk, TX, Burleson, TX, Brazos, TX, Washington, TX, Grimes, TX, Montgomery, TX, Northern Liberty, TX, Colorado, TX, Austin, TX, Waller, TX, Inland Harris, TX, Wharton, TX, Fort Bend, TX, Inland Jackson, TX, Inland Matagorda, TX, Inland Brazoria, TX, Coastal Jackson, TX 6:00 PM

Waller County, Texas, United States

Last updated: 4:57 PM CDT  ·  Refresh
33°C
Feels like 37°
Partly Cloudy
▲ 35°  /  ▼ 24°
Wind
11 mph SSE
Humidity
52%
Dew Point
22°
Pressure
29.77 inHg
Visibility
10 mi
UV Index
5.9
Cloud Cover
51%
Sunrise
7:07 AM
Sunset
7:31 PM
Drag to pan · double-click to forecast a point
WeatherAI™ Analysis

WeatherAI Analysis: Waller County is currently partly cloudy at 33°C. Dry conditions are expected through the next 24 hours. Atmospheric instability is elevated (CAPE up to 2766 J/kg) — isolated convective development possible. Sunrise: 7:07AM · Sunset: 7:31PM.

Alerts

Heat Advisory
Houston, TX, Trinity, TX, Madison, TX, Walker, TX, San Jacinto, TX, Polk, TX, Burleson, TX, Brazos, TX, Washington, TX, Grimes, TX, Montgomery, TX, Northern Liberty, TX, Colorado, TX, Austin, TX, Waller, TX, Inland Harris, TX, Wharton, TX, Fort Bend, TX, Inland Jackson, TX, Inland Matagorda, TX, Inland Brazoria, TX, Coastal Jackson, TX
Expires 6:00 PM
Heat Advisory
Houston, TX, Trinity, TX, Madison, TX, Walker, TX, San Jacinto, TX, Polk, TX, Burleson, TX, Brazos, TX, Washington, TX, Grimes, TX, Montgomery, TX, Northern Liberty, TX, Colorado, TX, Austin, TX, Waller, TX, Inland Harris, TX, Wharton, TX, Fort Bend, TX, Inland Jackson, TX, Inland Matagorda, TX, Inland Brazoria, TX, Coastal Jackson, TX
Expires 6:00 PM
23 AQI · Good Dominant: PM2.5 Air Quality
Hourly Forecast · Next 24 Hours
Now
33°
8%
5 PM
33°
9%
6 PM
33°
7%
7 PM
31°
24%
8 PM
31°
4%
9 PM
28°
4%
10 PM
28°
4%
11 PM
27°
4%
12 AM
27°
3%
1 AM
26°
3%
2 AM
26°
5%
3 AM
26°
5%
4 AM
26°
9%
5 AM
24°
8%
6 AM
24°
8%
7 AM
26°
20%
8 AM
27°
19%
9 AM
28°
32%
10 AM
29°
33%
11 AM
31°
33%
12 PM
32°
37%
1 PM
32°
34%
2 PM
32°
35%
3 PM
32°
31%
7-Day Forecast
Today
35° 24°
Partly Cloudy with a 24% chance of rain.
Mon
36° 24°
Partly Cloudy with a 33% chance of rain.
Tue
37° 24°
Partly Cloudy.
Wed
35° 23°
Partly Cloudy.
Thu
36° 23°
Mostly Cloudy with a 34% chance of rain.
Fri
36° 22°
Clear.
Sat
36° 21°
Clear.
TimeTempConditionsPrecipWindHumidity
Now 33° Partly Cloudy 8% 11 mph SSE 52%
5 PM 33° Partly Cloudy 9% 11 mph SSE 60%
6 PM 33° Mostly Cloudy 7% 8 mph SSE 64%
7 PM 31° Mostly Cloudy 24% 8 mph SSE 68%
8 PM 31° Partly Cloudy 4% 7 mph SSE 71%
9 PM 28° Partly Cloudy 4% 8 mph SSE 75%
10 PM 28° Mostly Clear 4% 7 mph SSE 80%
11 PM 27° Partly Cloudy 4% 6 mph SSE 85%
12 AM 27° Mostly Clear 3% 5 mph SSE 91%
1 AM 26° Mostly Clear 3% 5 mph SSE 93%
2 AM 26° Mostly Clear 5% 4 mph SSE 94%
3 AM 26° Mostly Clear 5% 4 mph SE 95%
4 AM 26° Mostly Clear 9% 4 mph SE 94%
5 AM 24° Mostly Clear 8% 4 mph SE 93%
6 AM 24° Mostly Clear 8% 4 mph SE 92%
7 AM 26° Mostly Clear 20% 5 mph SE 86%
8 AM 27° Mostly Clear 19% 5 mph SE 78%
9 AM 28° Mostly Clear 32% 6 mph SE 73%
10 AM 29° Mostly Clear 33% 5 mph SE 69%
11 AM 31° Mostly Clear 33% 5 mph SE 64%
12 PM 32° Partly Cloudy 37% 6 mph SSE 60%
1 PM 32° Partly Cloudy 34% 7 mph SE 61%
2 PM 32° Partly Cloudy 35% 8 mph SE 62%
3 PM 32° Mostly Cloudy 31% 9 mph SE 63%
15-Day Forecast
Today
9/13
Partly Cloudy
24%
24°
35°
Mon
9/14
Partly Cloudy
33%
24°
36°
Tue
9/15
Partly Cloudy
12%
24°
37°
Wed
9/16
Partly Cloudy
17%
23°
35°
Thu
9/17
Mostly Cloudy
34%
23°
36°
Fri
9/18
Clear
10%
22°
36°
Sat
9/19
Clear
11%
21°
36°
Sun
9/20
Mostly Clear
60%
23°
36°
Mon
9/21
Drizzle
60%
23°
35°
Tue
9/22
Drizzle
64%
22°
34°
Wed
9/23
Drizzle
64%
22°
33°
Thu
9/24
Drizzle
60%
22°
34°
Fri
9/25
Drizzle
60%
21°
33°
Sat
9/26
Clear
25%
21°
33°
Sun
9/27
Drizzle
60%
21°
33°
23
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
23 AQI 4.1 µg/m³
O3
Ground-level ozone
21 AQI 23 ppb
3-Day Outlook
DayAQICategoryO₃PM2.5
Mon 23 Good 21 23
Tue 25 Good 25 24
Wed 28 Good 28 27
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
SBCAPE2219 J/kg
MLCAPE2568 J/kg
MUCAPE2912 J/kg
SBCIN-30 J/kg
MLCIN-50 J/kg
Lifted Index-5.2
Kinematics
0–6 km Shear9 kt
0–1 km Shear6 kt
Eff. Shear11 kt
0–1 km SRH-12
0–3 km SRH38
Eff. SRH38
Storm Motion107° @ 21 kt
0–1 km EHI-0.2
Composite Parameters
Sig. Tornado0.0
STP (eff)0.0
Supercell0.0
K-Index32.7
Thermo & Levels
PWAT2.02 in
0–3 km LR7.2 °C/km
700–500 LR5.8 °C/km
Total Totals46.7
LCL865 hPa
LFC767 hPa
EL162 hPa
Freezing Lvl16,273 ft