This document provides an overview of air pollution in India. It defines air pollution as occurring when air contains harmful amounts of gases, dust, fumes or odors. The main types of air pollution are outdoor and indoor air pollution. Primary pollutants are emitted directly from sources while secondary pollutants form from chemical changes in the atmosphere. Air pollution has negative impacts on climate, health, the environment and economy. The government of India has implemented policies and initiatives to control air pollution such as promoting renewable energy, electric vehicles, and afforestation programs.