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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?

The average fuel efficiency of cars in the U.S. today is 20 miles/gallon. A car that gets 20 mpg produces 6 tons of CO2 each year. If we improve fuel efficiency by 20% (24 mpg), we save one ton of CO2 per car. With more than 230 million registered vehicles in the U.S., that's a savings of over 230 million tons of CO2 annually!