Drive Clean Texas

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Three metro areas of Texas are considered to be in "nonattainment" under the Clean Air Act, meaning they do not meet federal air quality standards because pollutant levels are too high: Houston/Galveston, Dallas/Fort Worth, and El Paso.

Six more areas of the state are classified as "near-nonattainment" or "early action" because they are close to exceeding federal air quality standards: Austin, San Antonio, Victoria, Tyler/Longview, Beaumont/Port Arthur, and Corpus Christi.

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The AQI (Air Quality Index) is an index for reporting daily air quality. It tells you how clean or polluted your air is, and what associated health effects might be a concern for you. EPA calculates the AQI for six major air pollutants regulated by the Clean Air Act: ground-level ozone, carbon monoxide, sulfur dioxide, nitrogen dioxide, lead, and particulate matter.

Learn about the air quality in your area.

Summer weather in Texas is dominated by high-pressure systems, giving us clear skies and stagnant winds. Those conditions can be conducive to the formation of ground-level ozone.

Learn about vehicle-related pollutants.

Learn what you can do to reduce emissions at Do Your Part.

Air Quality Research in Texas

Related Links

Air Quality Index (AQI) - A Guide to Air Quality and Your Health
Find out how you can see daily air quality reporting.

The American Lung Association - Healthy Air
American Lung Association's efforts to ensure the air we breathe is clean and safe.

The American Lung Association - Central States
See how the American Lung Association is taking action in Texas.

Fuel Economy - Find a Car
Find and compare cars...Gas mileage (MPG), greenhouse gas emissions, air pollution ratings, and safety information for new and used cars and trucks.

National Office of Oceanic and Atmospheric Research - Weather and Air Quality Research
Dig in to find lots of great information on how air quality affects the weather and climate change.

Texas Commission on Environmental Quality (TCEQ)
Find information and tools that will help you protect our state's natural resources.

Don't forget to visit our air quality partner programs page.

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