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 7:00 PM

Washington County, Texas, United States

Last updated: 9:34 PM CDT  ·  Refresh
30°C
Feels like 34°
Clear
▲ 34°  /  ▼ 22°
Wind
11 mph S
Humidity
65%
Dew Point
22°
Pressure
29.56 inHg
Visibility
10 mi
UV Index
0.0
Cloud Cover
2%
Sunrise
6:41 AM
Sunset
8:22 PM
Drag to pan · double-click to forecast a point
WeatherAI™ Analysis

WeatherAI Analysis: Washington County is currently clear at 30°C. Dry conditions are expected through the next 24 hours. Atmospheric instability is elevated (CAPE up to 1144 J/kg) — isolated convective development possible. Sunrise: 6:41AM · Sunset: 8:22PM.

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
Expires 7:00 PM
42 AQI · Good Dominant: PM2.5 Air Quality
Hourly Forecast · Next 24 Hours
Now
30°
3%
10 PM
29°
3%
11 PM
28°
3%
12 AM
27°
3%
1 AM
26°
3%
2 AM
26°
3%
3 AM
25°
3%
4 AM
24°
3%
5 AM
22°
3%
6 AM
22°
3%
7 AM
23°
3%
8 AM
25°
3%
9 AM
27°
3%
10 AM
28°
3%
11 AM
30°
3%
12 PM
32°
3%
1 PM
34°
3%
2 PM
34°
3%
3 PM
35°
3%
4 PM
37°
3%
5 PM
36°
3%
6 PM
36°
3%
7 PM
34°
3%
8 PM
33°
3%
7-Day Forecast
Tonight
34° 22°
Clear.
Tue
38° 22°
Mostly Clear.
Wed
38° 23°
Partly Cloudy.
Thu
38° 24°
Mostly Clear.
Fri
39° 22°
Clear.
Sat
41° 24°
Clear.
Sun
39° 23°
Clear.
TimeTempConditionsPrecipWindHumidity
Now 30° Clear 3% 11 mph S 65%
10 PM 29° Clear 3% 11 mph S 70%
11 PM 28° Clear 3% 11 mph S 76%
12 AM 27° Clear 3% 10 mph S 82%
1 AM 26° Mostly Clear 3% 9 mph S 87%
2 AM 26° Mostly Clear 3% 8 mph S 90%
3 AM 25° Mostly Clear 3% 7 mph SSW 93%
4 AM 24° Partly Cloudy 3% 6 mph SSW 94%
5 AM 22° Partly Cloudy 3% 6 mph SSW 95%
6 AM 22° Partly Cloudy 3% 6 mph SSW 95%
7 AM 23° Partly Cloudy 3% 7 mph SSW 90%
8 AM 25° Partly Cloudy 3% 9 mph SSW 82%
9 AM 27° Mostly Cloudy 3% 10 mph SSW 74%
10 AM 28° Partly Cloudy 3% 11 mph SSW 66%
11 AM 30° Partly Cloudy 3% 10 mph SSW 59%
12 PM 32° Mostly Clear 3% 10 mph SSW 52%
1 PM 34° Clear 3% 9 mph SSW 47%
2 PM 34° Clear 3% 10 mph SSW 44%
3 PM 35° Clear 3% 10 mph S 42%
4 PM 37° Mostly Clear 3% 10 mph S 41%
5 PM 36° Mostly Clear 3% 11 mph S 43%
6 PM 36° Mostly Clear 3% 12 mph S 45%
7 PM 34° Mostly Clear 3% 12 mph S 49%
8 PM 33° Mostly Clear 3% 12 mph S 55%
15-Day Forecast
Today
7/27
Clear
3%
22°
34°
Tue
7/28
Mostly Clear
3%
22°
38°
Wed
7/29
Partly Cloudy
3%
23°
38°
Thu
7/30
Mostly Clear
3%
24°
38°
Fri
7/31
Clear
3%
22°
39°
Sat
8/1
Clear
17%
24°
41°
Sun
8/2
Clear
8%
23°
39°
Mon
8/3
Rain
18%
23°
39°
Tue
8/4
Rain
29%
21°
37°
Wed
8/5
Rain
42%
23°
38°
Thu
8/6
Clear
60%
23°
37°
Fri
8/7
Drizzle
60%
23°
38°
Sat
8/8
Clear
60%
23°
38°
Sun
8/9
Clear
25%
23°
38°
Mon
8/10
Drizzle
60%
23°
38°
42
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
42 AQI 7.6 µg/m³
O3
Ground-level ozone
26 AQI 29 ppb
3-Day Outlook
DayAQICategoryO₃PM2.5
Today 42 Good 26 42
Wed 53 Moderate 25 53
Thu 59 Moderate 24 59
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 Jul 28, 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
SBCAPE852 J/kg
MLCAPE890 J/kg
MUCAPE968 J/kg
SBCIN-268 J/kg
MLCIN0 J/kg
Lifted Index-0.7
Kinematics
0–6 km Shear23 kt
0–1 km Shear6 kt
Eff. Shear33 kt
0–1 km SRH47
0–3 km SRH25
Eff. SRH-15
Storm Motion293° @ 14 kt
0–1 km EHI0.3
Composite Parameters
Sig. Tornado0.1
STP (eff)0.0
Supercell0.0
K-Index19.0
Thermo & Levels
PWAT1.55 in
0–3 km LR5.4 °C/km
700–500 LR5.5 °C/km
Total Totals39.0
LCL895 hPa
LFC530 hPa
EL186 hPa
Freezing Lvl18,271 ft