The Air (Prevention and Control of Pollution) Act 1981 provides the legal framework for regulating air pollution in India. It established the Central Pollution Control Board and State Pollution Control Boards to coordinate activities and enforce the provisions of the Act. The Act defines air pollution and pollutants, and sets standards for emissions from industries. It aims to prevent and control air pollution and maintain air quality. Central and State Boards are responsible for implementing the Act through monitoring, planning corrective measures, providing technical assistance and guidance, and imposing penalties on non-compliant industries.