How does the EPA monitor and control air?

The Environmental Protection Agency (EPA) monitors and controls air quality through a combination of regulatory standards, data collection, and enforcement activities. It sets National Ambient Air Quality Standards (NAAQS) for key pollutants, conducts air quality assessments, and collaborates with state and local agencies to ensure compliance. The EPA also operates a network of air monitoring stations that provide real-time data on air quality, helping to identify pollution sources and trends. Additionally, it implements programs to reduce emissions from various sectors, including transportation and industrial processes.