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TeachMeFinance.com - explain National Ambient Air Quality Standards National Ambient Air Quality Standards -- In the United States, national standards for the ambient concentrations in air of different air pollutants designed to protect human health and welfare. Copyright © 2005 by Mark McCracken, All Rights Reserved. TeachMeFinance.com is an informational website, and should not be used as a substitute for professional medical, legal or financial advice. Information presented at TeachMeFinance.com is provided on an "AS-IS" basis. Please read the disclaimer for details.