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Air Quality

Air Quality
Air Monitoring

The latest forecast for air quality conditions in Texas' metropolitan areas.

Sources of Air Emissions

Small emission sources that are inventoried as a group, such as some commercial, industrial, governmental or institutional sources from a specific area.


The Texas Emissions Reduction Plan provides financial incentives to eligible individuals, businesses or local governments to reduce emissions from polluting vehicles and equipment.

Mobile Source

Reducing emissions from vehicles, construction equipment, boats, lawn equipment and various non-stationary sources of air pollution.

Air Modeling

TCEQ staff use computer models to simulate the meteorological conditions and chemical reactions that contribute to the formation of air pollutants and to predict how air quality in a region will be affected by economic and population growth, and by reducing pollution emissions.


The Texas State Implementation Plan (SIP) is the state’s comprehensive plan to clean the air and meet federal air quality standards.

Emissions Banking and Trading

Programs for obtaining credit for achieved reductions in emissions. Data on credits available for sale or trade. Guidance and required forms.

Eagle Ford Shale Geological Area

The Eagle Ford Shale is a hydrocarbon-producing geological formation extending over 24 counties. It stretches from the Mexican border between Laredo and Eagle Pass up through counties east of Temple and Waco.

Air Research

Understanding the sources of air pollution and how to improve air quality.

Texas Air Quality

TCEQ programs have helped improve Texas air quality through voluntary incentives, regulations and cutting-edge research into the causes of air pollution and how to reduce it.

Air Quality Successes

The TCEQ diligently incorporates the latest scientific research, methods, and models and cutting-edge technology to strategically investigate, evaluate, and improve air quality.

SIP and Rules

Links to the State Implementation Plan and to rules the agency uses to manage air quality in Texas.