Today | Weather | Tuesday, August 25, 2026
Active Weather Warnings

Weather in Galveston, Texas

02:48 PM
Now
Cloudy Weather
93° F
Feels Like 106°
Precipitation 6 %
Wind 11 mph
UV Index (0 - 11+) 7
Humidity 61 %
Today
Cloudy Weather
Day 93°
Night 82°
Precipitation 25 %
Wind 8 mph
UV Index (0 - 11+) 10

Warning: High UV Index Today: 10

High risk of harm from unprotected sun exposure. Take precautions: wear a hat, sunglasses, and apply sunscreen regularly if you’ll be outdoors for extended periods.

Galveston Weather Forecast Updated

52 minutes ago
Last updated on

Air Quality in Galveston

NOW
15 AQI
Good air quality Dominant pollutant: O3

Pollutant Concentrations:

PM2.5 1.11 µg/m³
PM10 4.14 µg/m³
O3 0.016 ppm
NO2 0 ppb
SO2 0 ppb
CO 0.08 ppm
NH3 0 µg/m³
NO 0.01 µg/m³
PM2.5 – Fine particles <2.5μm
PM10 – Inhalable particles <10μm
O3 – Ozone
NO2 – Nitrogen dioxide
SO2 – Sulfur dioxide
CO – Carbon monoxide
NH3 – Ammonia
NO – Nitric oxide

Health Recommendations:

Air quality is considered satisfactory, and air pollution poses little or no risk.

Show raw pollutant concentrations (µg/m³)
PM2.51.11 µg/m³
PM104.14 µg/m³
O331.47 µg/m³
NO20.04 µg/m³
SO20.08 µg/m³
CO90.8 µg/m³
NH30 µg/m³
NO0.01 µg/m³

Weather Alerts and Warnings for Galveston

Moderate Expected Likely

Heat Advisory

Heat Advisory issued August 25 at 12:34PM CDT until August 26 at 7:00PM CDT by NWS Houston/Galveston TX
Aug 25, 12:34 PM Aug 26, 7:00 PM
WHAT: Heat index values up to 108.

WHERE: Portions of south central and southeast Texas.

WHEN: Until 7 PM CDT Wednesday.

IMPACTS: Hot temperatures and high humidity may cause heat
illnesses.
+ Read More
Take extra precautions when outside. Wear lightweight and loose fitting clothing. Try to limit strenuous activities to early morning or evening. Take action when you see symptoms of heat exhaustion and heat stroke. To reduce risk during outdoor work, the Occupational Safety and Health Administration recommends scheduling frequent rest breaks in shaded or air conditioned environments. Anyone overcome by heat should be moved to a cool and shaded location. Heat stroke is an emergency! Call 9 1 1.
Updated: Aug 25, 1:55 PM Source: NWS Alert