Which gases are responsible for air pollution (Air Pollutants)?
The U.S. Environmental Protection Agency (EPA) has identified six pollutants as "criteria" air pollutants due to their significant impact on human health and the environment. These pollutants are regulated based on established criteria aimed at protecting public health and welfare. These six pollutants are carbon monoxide, lead, nitrogen oxides, ground-level ozone, particle pollution (often referred to as particulate matter), and sulfur oxides.