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

Washington County, Texas, United States

Last updated: 4:53 PM CDT  ·  Refresh
34°C
Feels like 38°
Partly Cloudy
▲ 36°  /  ▼ 24°
Wind
11 mph SSE
Humidity
46%
Dew Point
22°
Pressure
29.63 inHg
Visibility
10 mi
UV Index
6.4
Cloud Cover
39%
Sunrise
7:08 AM
Sunset
7:33 PM
Drag to pan · double-click to forecast a point
WeatherAI™ Analysis

WeatherAI Analysis: Washington County is currently partly cloudy at 34°C. Dry conditions are expected through the next 24 hours. Atmospheric instability is elevated (CAPE up to 2630 J/kg) — isolated convective development possible. Sunrise: 7:08AM · Sunset: 7:33PM.

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
26 AQI · Good Dominant: PM2.5 Air Quality
Hourly Forecast · Next 24 Hours
Now
34°
8%
5 PM
34°
9%
6 PM
34°
9%
7 PM
32°
9%
8 PM
32°
9%
9 PM
29°
6%
10 PM
28°
4%
11 PM
28°
4%
12 AM
27°
3%
1 AM
26°
3%
2 AM
26°
5%
3 AM
26°
5%
4 AM
26°
5%
5 AM
24°
5%
6 AM
24°
5%
7 AM
24°
29%
8 AM
26°
29%
9 AM
27°
39%
10 AM
27°
42%
11 AM
29°
43%
12 PM
30°
38%
1 PM
32°
30%
2 PM
33°
31%
3 PM
33°
28%
7-Day Forecast
Today
36° 24°
Partly Cloudy.
Mon
36° 24°
Partly Cloudy with a 42% chance of rain.
Tue
38° 23°
Mostly Clear.
Wed
36° 23°
Partly Cloudy.
Thu
36° 23°
Mostly Cloudy.
Fri
37° 22°
Clear.
Sat
37° 21°
Clear.
TimeTempConditionsPrecipWindHumidity
Now 34° Partly Cloudy 8% 11 mph SSE 46%
5 PM 34° Mostly Cloudy 9% 13 mph SE 50%
6 PM 34° Overcast 9% 11 mph SSE 55%
7 PM 32° Mostly Cloudy 9% 10 mph SSE 60%
8 PM 32° Mostly Cloudy 9% 10 mph SSE 66%
9 PM 29° Partly Cloudy 6% 9 mph SSE 72%
10 PM 28° Partly Cloudy 4% 9 mph SSE 76%
11 PM 28° Mostly Clear 4% 8 mph SSE 81%
12 AM 27° Mostly Clear 3% 7 mph SSE 85%
1 AM 26° Mostly Clear 3% 6 mph SSE 88%
2 AM 26° Mostly Clear 5% 5 mph SSE 90%
3 AM 26° Mostly Clear 5% 4 mph SSE 92%
4 AM 26° Mostly Clear 5% 4 mph SSE 92%
5 AM 24° Partly Cloudy 5% 4 mph SE 91%
6 AM 24° Mostly Clear 5% 3 mph SE 91%
7 AM 24° Mostly Clear 29% 4 mph SE 87%
8 AM 26° Mostly Clear 29% 4 mph SE 81%
9 AM 27° Partly Cloudy 39% 4 mph SE 77%
10 AM 27° Partly Cloudy 42% 4 mph SSE 75%
11 AM 29° Partly Cloudy 43% 4 mph SSE 74%
12 PM 30° Partly Cloudy 38% 5 mph S 72%
1 PM 32° Partly Cloudy 30% 6 mph SSE 68%
2 PM 33° Partly Cloudy 31% 6 mph SSE 63%
3 PM 33° Partly Cloudy 28% 7 mph SSE 57%
15-Day Forecast
Today
9/13
Partly Cloudy
9%
24°
36°
Mon
9/14
Partly Cloudy
42%
24°
36°
Tue
9/15
Mostly Clear
12%
23°
38°
Wed
9/16
Partly Cloudy
10%
23°
36°
Thu
9/17
Mostly Cloudy
11%
23°
36°
Fri
9/18
Clear
10%
22°
37°
Sat
9/19
Clear
8%
21°
37°
Sun
9/20
Mostly Clear
49%
22°
36°
Mon
9/21
Drizzle
60%
23°
36°
Tue
9/22
Drizzle
60%
22°
35°
Wed
9/23
Drizzle
67%
22°
34°
Thu
9/24
Drizzle
60%
22°
34°
Fri
9/25
Drizzle
60%
21°
34°
Sat
9/26
Clear
25%
21°
33°
Sun
9/27
Drizzle
60%
21°
33°
26
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
26 AQI 4.6 µg/m³
O3
Ground-level ozone
22 AQI 25 ppb
3-Day Outlook
DayAQICategoryO₃PM2.5
Mon 26 Good 22 26
Tue 24 Good 24 20
Wed 27 Good 27 25
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
SBCAPE2203 J/kg
MLCAPE2003 J/kg
MUCAPE2425 J/kg
SBCIN-16 J/kg
MLCIN-82 J/kg
Lifted Index-4.8
Kinematics
0–6 km Shear10 kt
0–1 km Shear6 kt
Eff. Shear13 kt
0–1 km SRH-17
0–3 km SRH33
Eff. SRH33
Storm Motion111° @ 20 kt
0–1 km EHI-0.2
Composite Parameters
Sig. Tornado0.0
STP (eff)0.0
Supercell0.0
K-Index33.2
Thermo & Levels
PWAT1.86 in
0–3 km LR7.8 °C/km
700–500 LR5.7 °C/km
Total Totals47.2
LCL834 hPa
LFC767 hPa
EL162 hPa
Freezing Lvl16,129 ft