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

Weather in Houston, Texas

11:39 PM
Today
Cloudy Night
Day 99°
Night 79°
Precipitation 49 %
Wind 8 mph

Houston Weather Forecast Updated

Last updated on
Weather Forecast History
Last Year's Weather on This Day (August 25, 2025)
Night

Day

93°

Night

75°

Wind

6 mph

Precipitation

2 %

Air Quality in Houston

NOW
15 AQI
Good air quality Dominant pollutant: O3

Pollutant Concentrations:

PM2.5 0.84 µg/m³
PM10 2.91 µg/m³
O3 0.016 ppm
NO2 0.3 ppb
SO2 0.1 ppb
CO 0.08 ppm
NH3 0.15 µg/m³
NO 0 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)
PM2.50.84 µg/m³
PM102.91 µg/m³
O331.52 µg/m³
NO20.54 µg/m³
SO20.25 µg/m³
CO90.82 µg/m³
NH30.15 µg/m³
NO0 µg/m³

Weather Alerts and Warnings for Houston

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.
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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, 11:08 PM Source: NWS Alert