Galveston County, Texas, United States

Last updated: 6:02 AM CDT  ·  Refresh
27°C
Feels like 30°
Mostly Clear
▲ 36°  /  ▼ 27°
Wind
5 mph SW
Humidity
88%
Dew Point
25°
Pressure
29.98 inHg
Visibility
10 mi
UV Index
0.0
Cloud Cover
20%
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 mostly clear at 27°C. Dry conditions are expected through the next 24 hours. Atmospheric instability is elevated (CAPE up to 2843 J/kg) — isolated convective development possible. Sunrise: 6:53AM · Sunset: 7:49PM.

Alerts

No active alerts for this location.
56 AQI · Moderate Dominant: PM2.5 Air Quality
Hourly Forecast · Next 24 Hours
Now
27°
3%
7 AM
26°
19%
8 AM
28°
20%
9 AM
29°
20%
10 AM
32°
14%
11 AM
33°
14%
12 PM
34°
14%
1 PM
35°
3%
2 PM
35°
3%
3 PM
35°
3%
4 PM
35°
3%
5 PM
34°
3%
6 PM
32°
3%
7 PM
31°
3%
8 PM
31°
3%
9 PM
30°
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%
4 AM
28°
3%
5 AM
27°
3%
7-Day Forecast
Today
36° 27°
Mostly Clear with a 20% chance of rain.
Wed
36° 27°
Mostly Clear.
Thu
37° 28°
Mostly Clear with a 41% chance of rain.
Fri
36° 28°
Mostly Clear with a 67% chance of rain.
Sat
36° 27°
Mostly Clear with a 40% chance of rain.
Sun
34° 28°
Drizzle, 41% chance.
Mon
34° 28°
Drizzle, 63% chance.
TimeTempConditionsPrecipWindHumidity
Now 27° Mostly Clear 3% 5 mph SW 88%
7 AM 26° Mostly Clear 19% 4 mph WSW 88%
8 AM 28° Mostly Clear 20% 4 mph WSW 83%
9 AM 29° Mostly Clear 20% 5 mph WSW 76%
10 AM 32° Mostly Clear 14% 5 mph SW 69%
11 AM 33° Mostly Clear 14% 4 mph SSW 65%
12 PM 34° Partly Cloudy 14% 5 mph S 61%
1 PM 35° Partly Cloudy 3% 5 mph SE 57%
2 PM 35° Mostly Clear 3% 7 mph SE 58%
3 PM 35° Mostly Clear 3% 8 mph SE 60%
4 PM 35° Mostly Clear 3% 10 mph SSE 62%
5 PM 34° Mostly Clear 3% 10 mph SSE 65%
6 PM 32° Mostly Clear 3% 11 mph SSE 68%
7 PM 31° Mostly Clear 3% 11 mph S 72%
8 PM 31° Mostly Clear 3% 10 mph S 75%
9 PM 30° Mostly Clear 3% 10 mph S 78%
10 PM 29° Mostly Clear 3% 9 mph S 81%
11 PM 29° Mostly Clear 3% 9 mph SSW 83%
12 AM 28° Mostly Clear 3% 8 mph SSW 85%
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 87%
4 AM 28° Mostly Clear 3% 7 mph SW 88%
5 AM 27° Partly Cloudy 3% 7 mph SW 89%
15-Day Forecast
Today
8/25
Mostly Clear
20%
27°
36°
Wed
8/26
Mostly Clear
3%
27°
36°
Thu
8/27
Mostly Clear
41%
28°
37°
Fri
8/28
Mostly Clear
67%
28°
36°
Sat
8/29
Mostly Clear
40%
27°
36°
Sun
8/30
Drizzle
41%
28°
34°
Mon
8/31
Drizzle
63%
28°
34°
Tue
9/1
Mostly Cloudy
34%
28°
35°
Wed
9/2
Drizzle
47%
28°
35°
Thu
9/3
Mostly Clear
27%
28°
34°
Fri
9/4
Clear
60%
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%
29°
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, 09:00'Z' · F0 · 130 (13 km CONUS/NA)
Hodograph · kt
10 20 30 40 SM
0–1 1–3 3–6 6–9 km
Instability
SBCAPE2117 J/kg
MLCAPE1715 J/kg
MUCAPE2164 J/kg
SBCIN-157 J/kg
MLCIN-162 J/kg
Lifted Index-5.6
Kinematics
0–6 km Shear25 kt
0–1 km Shear11 kt
Eff. Shear17 kt
0–1 km SRH-55
0–3 km SRH-47
Eff. SRH-47
Storm Motion104° @ 19 kt
0–1 km EHI-0.7
Composite Parameters
Sig. Tornado0.0
STP (eff)0.0
Supercell0.0
K-Index22.4
Thermo & Levels
PWAT1.86 in
0–3 km LR4.8 °C/km
700–500 LR6.3 °C/km
Total Totals37.0
LCL986 hPa
LFC738 hPa
EL160 hPa
Freezing Lvl16,138 ft