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

Galveston County, Texas, United States

Last updated: 4:50 AM CDT  ·  Refresh
27°C
Feels like 30°
Partly Cloudy
▲ 36°  /  ▼ 27°
Wind
5 mph SW
Humidity
87%
Dew Point
25°
Pressure
29.97 inHg
Visibility
10 mi
UV Index
0.0
Cloud Cover
37%
Sunrise
6:53 AM
Sunset
7:49 PM
Drag to pan · double-click to forecast a point
WeatherAI™ Analysis

WeatherAI Analysis: Galveston County is currently partly cloudy at 27°C. Dry conditions are expected through the next 24 hours. Atmospheric instability is elevated (CAPE up to 2823 J/kg) — isolated convective development possible. Sunrise: 6:53AM · Sunset: 7:49PM.

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
56 AQI · Moderate Dominant: PM2.5 Air Quality
Hourly Forecast · Next 24 Hours
Now
27°
3%
5 AM
26°
21%
6 AM
26°
21%
7 AM
27°
21%
8 AM
29°
21%
9 AM
32°
21%
10 AM
33°
15%
11 AM
34°
15%
12 PM
35°
7%
1 PM
36°
3%
2 PM
36°
3%
3 PM
35°
3%
4 PM
34°
3%
5 PM
32°
3%
6 PM
31°
3%
7 PM
31°
3%
8 PM
30°
3%
9 PM
29°
3%
10 PM
29°
3%
11 PM
29°
3%
12 AM
28°
3%
1 AM
28°
3%
2 AM
28°
3%
3 AM
28°
3%
7-Day Forecast
Today
36° 27°
Mostly Clear with a 21% chance of rain.
Wed
36° 27°
Mostly Clear.
Thu
37° 28°
Mostly Clear with a 64% chance of rain.
Fri
36° 28°
Rain, 60% chance.
Sat
36° 28°
Drizzle, 42% chance.
Sun
34° 28°
Drizzle, 43% chance.
Mon
35° 28°
Drizzle, 63% chance.
TimeTempConditionsPrecipWindHumidity
Now 27° Partly Cloudy 3% 5 mph SW 87%
5 AM 26° Mostly Clear 21% 4 mph WSW 87%
6 AM 26° Mostly Clear 21% 4 mph WSW 88%
7 AM 27° Mostly Clear 21% 4 mph WSW 84%
8 AM 29° Mostly Clear 21% 5 mph WSW 77%
9 AM 32° Mostly Clear 21% 5 mph WSW 70%
10 AM 33° Mostly Clear 15% 4 mph SW 65%
11 AM 34° Mostly Clear 15% 4 mph S 61%
12 PM 35° Mostly Clear 7% 5 mph SE 58%
1 PM 36° Mostly Clear 3% 6 mph SE 58%
2 PM 36° Mostly Clear 3% 8 mph SE 60%
3 PM 35° Clear 3% 10 mph SSE 61%
4 PM 34° Mostly Clear 3% 10 mph SSE 64%
5 PM 32° Mostly Clear 3% 11 mph SSE 67%
6 PM 31° Partly Cloudy 3% 11 mph S 71%
7 PM 31° Mostly Clear 3% 11 mph S 75%
8 PM 30° Mostly Clear 3% 10 mph S 78%
9 PM 29° Mostly Clear 3% 10 mph S 81%
10 PM 29° Mostly Clear 3% 9 mph S 83%
11 PM 29° Mostly Clear 3% 9 mph SSW 84%
12 AM 28° Mostly Clear 3% 9 mph SSW 86%
1 AM 28° Mostly Clear 3% 8 mph SSW 86%
2 AM 28° Mostly Clear 3% 8 mph SSW 87%
3 AM 28° Mostly Clear 3% 8 mph SW 88%
15-Day Forecast
Today
8/25
Mostly Clear
21%
27°
36°
Wed
8/26
Mostly Clear
3%
27°
36°
Thu
8/27
Mostly Clear
64%
28°
37°
Fri
8/28
Rain
60%
28°
36°
Sat
8/29
Drizzle
42%
28°
36°
Sun
8/30
Drizzle
43%
28°
34°
Mon
8/31
Drizzle
63%
28°
35°
Tue
9/1
Clear
18%
29°
35°
Wed
9/2
Drizzle
44%
28°
35°
Thu
9/3
Clear
19%
28°
35°
Fri
9/4
Clear
25%
28°
36°
Sat
9/5
Clear
60%
28°
36°
Sun
9/6
Drizzle
60%
28°
36°
Mon
9/7
Drizzle
60%
28°
36°
Tue
9/8
Drizzle
60%
28°
36°
56
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
56 AQI 12.0 µg/m³
O3
Ground-level ozone
30 AQI 33 ppb
3-Day Outlook
DayAQICategoryO₃PM2.5
Today 56 Moderate 30 56
Wed 48 Good 31 48
Thu 48 Good 31 48
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, 08:00'Z' · F0 · 130 (13 km CONUS/NA)
Hodograph · kt
10 20 30 40 SM
0–1 1–3 3–6 6–9 km
Instability
SBCAPE2264 J/kg
MLCAPE1646 J/kg
MUCAPE2271 J/kg
SBCIN-170 J/kg
MLCIN-199 J/kg
Lifted Index-6.2
Kinematics
0–6 km Shear23 kt
0–1 km Shear12 kt
Eff. Shear17 kt
0–1 km SRH-69
0–3 km SRH-64
Eff. SRH-64
Storm Motion111° @ 20 kt
0–1 km EHI-1.0
Composite Parameters
Sig. Tornado0.0
STP (eff)0.0
Supercell0.0
K-Index24.0
Thermo & Levels
PWAT1.84 in
0–3 km LR4.6 °C/km
700–500 LR6.7 °C/km
Total Totals38.8
LCL984 hPa
LFC729 hPa
EL155 hPa
Freezing Lvl16,132 ft