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What are Ambient Air Quality Standards?

April 26, 2017air quality Ambient Standards

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What are Ambient Air Quality Standards?

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An ambient air quality standard sets legal limits on the level of an air pollutant in the outdoor (ambient) air necessary to protect public health. The federal Clean Air Act requires that the U.S. Environmental Protection Agency (U.S. EPA) establish National Ambient Air Quality Standards and reassess, at least every five years, whether adopted standards are adequate to protect public health based on current scientific evidence. U.S. EPA is required to rely on the advice of an independent scientific panel, the Clean Air Scientific Advisory Committee. California has established ambient air quality standards equal to or stricter than the federal standards. In addition, California has standards for pollutants not addressed in the federal standards (View state and federal Standards).