Republic Act No. 8749, also known as the Philippine Clean Air Act of 1999, aims to provide comprehensive air pollution control and management in the country. It recognizes the rights of citizens to clean air and participation in environmental decision making. It also tasks the national and local governments to protect the environment. The law designates airsheds, sets emissions standards for mobile and stationary sources, establishes penalties for violations, and encourages citizen participation to achieve its goal of clean air for all.