Definition

Occurs when a measured concentration of a criteria pollutant exceeds the concentration level for the averaging period specified by the National Ambient Air Quality Standards (NAAQS) for specific criteria over a specified
timeframe.

Definition and Description

A violation of air quality, in the context of environmental regulations and standards, occurs when the concentration of one or more air pollutants in a specific location exceeds the allowable limits or thresholds established by governmental authorities or environmental agencies. These allowable limits, often referred to as air quality standards or criteria, are set to safeguard public health, protect the environment, and ensure that the quality of the air remains within acceptable levels.