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Clean Air World

Welcome to Clean Air World

The National Association of Clean Air Agencies (NACAA, formerly STAPPA/ALAPCO) welcomes you to Clean Air World. Use this web site to learn about air pollution, find the latest news and information on important air topics and link to governmental air pollution control agencies around the world  

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Did You Know?

On hot summer days, urban air can be 2-10 degrees Fahrenheit hotter than the surrounding countryside due to a phenomenon known as the urban heat island. Simple steps like installing reflective roofing and pavement and strategically locating new trees can help cities lower temperatures, reduce ozone formation and decrease energy use and related emissions.