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, Chambers, TX, Wharton, TX, Fort Bend, TX, Inland Jackson, TX, Inland Matagorda, TX, Inland Brazoria, TX, Inland Galveston, TX, Southern Liberty, TX, Coastal Harris, TX, Coastal Jackson, TX, Coastal Matagorda, TX, Coastal Brazoria, TX, Coastal Galveston, TX, Matagorda Islands, TX, Brazoria Islands, TX, Galveston Island, TX, Bolivar Peninsula, TX 7:00 PM

Waller County, Texas, United States

Last updated: 3:41 AM CDT  ·  Refresh
26°C
Feels like 29°
Mostly Clear
▲ 39°  /  ▼ 24°
Wind
6 mph SSW
Humidity
94%
Dew Point
24°
Pressure
29.78 inHg
Visibility
9 mi
UV Index
0.0
Cloud Cover
16%
Sunrise
6:57 AM
Sunset
7:54 PM
Drag to pan · double-click to forecast a point
WeatherAI™ Analysis

WeatherAI Analysis: Waller County is currently mostly clear at 26°C. Dry conditions are expected through the next 24 hours. Atmospheric instability is elevated (CAPE up to 2030 J/kg) — isolated convective development possible. Sunrise: 6:57AM · Sunset: 7:54PM.

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, Chambers, TX, Wharton, TX, Fort Bend, TX, Inland Jackson, TX, Inland Matagorda, TX, Inland Brazoria, TX, Inland Galveston, TX, Southern Liberty, TX, Coastal Harris, TX, Coastal Jackson, TX, Coastal Matagorda, TX, Coastal Brazoria, TX, Coastal Galveston, TX, Matagorda Islands, TX, Brazoria Islands, TX, Galveston Island, TX, Bolivar Peninsula, TX
Expires 7:00 PM
52 AQI · Moderate Dominant: PM2.5 Air Quality
Hourly Forecast · Next 24 Hours
Now
26°
3%
4 AM
26°
3%
5 AM
23°
3%
6 AM
23°
3%
7 AM
24°
3%
8 AM
26°
3%
9 AM
27°
3%
10 AM
29°
4%
11 AM
31°
4%
12 PM
33°
5%
1 PM
36°
5%
2 PM
37°
5%
3 PM
37°
5%
4 PM
37°
5%
5 PM
39°
5%
6 PM
38°
5%
7 PM
37°
5%
8 PM
34°
5%
9 PM
32°
5%
10 PM
30°
3%
11 PM
29°
3%
12 AM
28°
3%
1 AM
28°
3%
2 AM
28°
3%
7-Day Forecast
Today
39° 24°
Mostly Clear.
Wed
41° 24°
Clear with a 21% chance of rain.
Thu
40° 24°
Partly Cloudy with a 57% chance of rain.
Fri
38° 23°
Rain, 65% chance.
Sat
39° 23°
Clear.
Sun
39° 23°
Clear.
Mon
38° 22°
Clear.
TimeTempConditionsPrecipWindHumidity
Now 26° Mostly Clear 3% 6 mph SSW 94%
4 AM 26° Clear 3% 5 mph SSW 95%
5 AM 23° Mostly Clear 3% 5 mph SSW 96%
6 AM 23° Mostly Clear 3% 5 mph SSW 96%
7 AM 24° Mostly Clear 3% 5 mph SSW 91%
8 AM 26° Partly Cloudy 3% 6 mph SW 82%
9 AM 27° Partly Cloudy 3% 8 mph SW 73%
10 AM 29° Partly Cloudy 4% 8 mph SW 64%
11 AM 31° Mostly Clear 4% 6 mph SW 55%
12 PM 33° Mostly Clear 5% 5 mph SW 46%
1 PM 36° Clear 5% 4 mph S 40%
2 PM 37° Clear 5% 5 mph SSE 37%
3 PM 37° Clear 5% 7 mph SSE 35%
4 PM 37° Clear 5% 8 mph SSE 35%
5 PM 39° Clear 5% 9 mph SSE 37%
6 PM 38° Mostly Clear 5% 10 mph SSE 40%
7 PM 37° Mostly Clear 5% 10 mph SSE 47%
8 PM 34° Mostly Clear 5% 11 mph S 56%
9 PM 32° Mostly Clear 5% 12 mph S 64%
10 PM 30° Mostly Clear 3% 11 mph S 70%
11 PM 29° Mostly Clear 3% 9 mph S 75%
12 AM 28° Mostly Clear 3% 8 mph S 80%
1 AM 28° Partly Cloudy 3% 8 mph SSW 82%
2 AM 28° Partly Cloudy 3% 7 mph SSW 83%
15-Day Forecast
Today
8/25
Mostly Clear
5%
24°
39°
Wed
8/26
Clear
21%
24°
41°
Thu
8/27
Partly Cloudy
57%
24°
40°
Fri
8/28
Rain
65%
23°
38°
Sat
8/29
Clear
16%
23°
39°
Sun
8/30
Clear
16%
23°
39°
Mon
8/31
Clear
8%
22°
38°
Tue
9/1
Rain
28%
22°
38°
Wed
9/2
Clear
19%
23°
40°
Thu
9/3
Clear
36%
23°
38°
Fri
9/4
Drizzle
60%
24°
39°
Sat
9/5
Clear
60%
24°
39°
Sun
9/6
Drizzle
60%
24°
38°
Mon
9/7
Drizzle
60%
24°
38°
Tue
9/8
Drizzle
60%
24°
38°
52
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
52 AQI 10.0 µg/m³
O3
Ground-level ozone
37 AQI 41 ppb
3-Day Outlook
DayAQICategoryO₃PM2.5
Today 52 Moderate 37 52
Wed 47 Good 34 47
Thu 52 Moderate 37 52
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 Tue Aug 25, 07:00'Z' · F0 · 130 (13 km CONUS/NA)
Hodograph · kt
10 20 30 40 SM
0–1 1–3 3–6 6–9 km
Instability
SBCAPE1689 J/kg
MLCAPE898 J/kg
MUCAPE1876 J/kg
SBCIN-297 J/kg
MLCIN-393 J/kg
Lifted Index-5.5
Kinematics
0–6 km Shear22 kt
0–1 km Shear10 kt
Eff. Shear—
0–1 km SRH-62
0–3 km SRH-53
Eff. SRH—
Storm Motion117° @ 21 kt
0–1 km EHI-0.7
Composite Parameters
Sig. Tornado0.0
STP (eff)—
Supercell—
K-Index19.0
Thermo & Levels
PWAT1.62 in
0–3 km LR3.8 °C/km
700–500 LR7.3 °C/km
Total Totals39.5
LCL990 hPa
LFC654 hPa
EL167 hPa
Freezing Lvl16,194 ft