Air Quality Levels

Poor air quality can have extremely adverse effects to human health, and when unregulated can result in numerous casualties. Because of this, in 1970 the Clean Air Act (CAA) was passed, regulating the air emissions from sources both stationary and mobile. This law gives the Environmental Protection Agency (EPA) the authority to determine and set the National Ambient Air Quality Standards (NAAQS) in order to protect the health of civilians and to regulate hazardous air pollutant emissions. The monitoring and regulation of air quality is the responsibility of the federal government, but do they see everything? What protections under the law do individuals have if their air quality becomes worse and goes unnoticed?