national ambient air quality standards (naaqs)

National Ambient Air Quality Standards (NAAQS) refer to the set of regulations established by a country's environmental agency to determine the maximum allowable levels of pollutants in outdoor air. These standards are designed to safeguard public health and the environment by limiting the concentrations of pollutants such as particulate matter, ozone, carbon monoxide, nitrogen dioxide, sulfur dioxide, and lead that are considered harmful.

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