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: 3:49 PM CDT  ·  Refresh
35°C
Feels like 39°
Partly Cloudy
▲ 35°  /  ▼ 23°
Wind
11 mph SSE
Humidity
48%
Dew Point
22°
Pressure
29,63 inHg
Visibility
10 mi
UV Index
7,8
Cloud Cover
34%
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 35°C. Dry conditions are expected through the next 24 hours. Atmospheric instability is elevated (CAPE up to 2615 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
35°
3%
4 PM
34°
5%
5 PM
35°
10%
6 PM
33°
24%
7 PM
32°
5%
8 PM
31°
5%
9 PM
28°
5%
10 PM
28°
3%
11 PM
27°
7%
12 AM
26°
6%
1 AM
26°
7%
2 AM
26°
9%
3 AM
26°
9%
4 AM
25°
9%
5 AM
23°
10%
6 AM
23°
9%
7 AM
24°
15%
8 AM
26°
15%
9 AM
27°
26%
10 AM
30°
27%
11 AM
31°
27%
12 PM
32°
28%
1 PM
33°
28%
2 PM
33°
29%
7-Day Forecast
Today
35° 23°
Partly Cloudy with a 24% chance of rain.
Mon
38° 23°
Partly Cloudy with a 32% chance of rain.
Tue
37° 23°
Partly Cloudy.
Wed
36° 22°
Partly Cloudy.
Thu
36° 23°
Clear.
Fri
37° 22°
Clear.
Sat
37° 22°
Clear.
TimeTempConditionsPrecipWindHumidity
Now 35° Partly Cloudy 3% 11 mph SSE 48%
4 PM 34° Partly Cloudy 5% 14 mph SSE 47%
5 PM 35° Partly Cloudy 10% 14 mph SSE 51%
6 PM 33° Mostly Cloudy 24% 11 mph SSE 56%
7 PM 32° Mostly Cloudy 5% 10 mph SSE 62%
8 PM 31° Mostly Cloudy 5% 9 mph SSE 68%
9 PM 28° Mostly Clear 5% 9 mph SSE 74%
10 PM 28° Mostly Clear 3% 9 mph SSE 79%
11 PM 27° Mostly Clear 7% 8 mph SSE 82%
12 AM 26° Mostly Clear 6% 7 mph SSE 86%
1 AM 26° Mostly Clear 7% 5 mph SSE 88%
2 AM 26° Mostly Clear 9% 5 mph SSE 90%
3 AM 26° Partly Cloudy 9% 5 mph SSE 92%
4 AM 25° Mostly Clear 9% 4 mph SSE 93%
5 AM 23° Mostly Clear 10% 4 mph SE 94%
6 AM 23° Mostly Clear 9% 4 mph SE 94%
7 AM 24° Mostly Clear 15% 4 mph SSE 89%
8 AM 26° Mostly Clear 15% 5 mph SSE 81%
9 AM 27° Mostly Clear 26% 6 mph SSE 74%
10 AM 30° Mostly Clear 27% 6 mph SSE 68%
11 AM 31° Mostly Clear 27% 6 mph SSE 63%
12 PM 32° Partly Cloudy 28% 6 mph S 58%
1 PM 33° Partly Cloudy 28% 6 mph SSE 58%
2 PM 33° Partly Cloudy 29% 7 mph SSE 59%
15-Day Forecast
Today
9/13
Partly Cloudy
24%
23°
35°
Mon
9/14
Partly Cloudy
32%
23°
38°
Tue
9/15
Partly Cloudy
8%
23°
37°
Wed
9/16
Partly Cloudy
3%
22°
36°
Thu
9/17
Clear
3%
23°
36°
Fri
9/18
Clear
3%
22°
37°
Sat
9/19
Clear
9%
22°
37°
Sun
9/20
Clear
60%
22°
36°
Mon
9/21
Drizzle
60%
23°
36°
Tue
9/22
Drizzle
60%
21°
35°
Wed
9/23
Drizzle
60%
21°
34°
Thu
9/24
Drizzle
60%
22°
34°
Fri
9/25
Drizzle
60%
21°
34°
Sat
9/26
Clear
60%
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 dim. sept. 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
SBCAPE2895 J/kg
MLCAPE2784 J/kg
MUCAPE3048 J/kg
SBCIN0 J/kg
MLCIN-7 J/kg
Lifted Index-5.1
Kinematics
0–6 km Shear3 kt
0–1 km Shear3 kt
Eff. Shear12 kt
0–1 km SRH9
0–3 km SRH25
Eff. SRH25
Storm Motion65° @ 12 kt
0–1 km EHI0.2
Composite Parameters
Sig. Tornado0.0
STP (eff)0.0
Supercell0.0
K-Index35.5
Thermo & Levels
PWAT1.96 in
0–3 km LR8.1 °C/km
700–500 LR5.3 °C/km
Total Totals46.7
LCL837 hPa
LFC1003 hPa
EL147 hPa
Freezing Lvl16,391 ft