Air pollution is the presence of harmful substances in the atmosphere that damage human health and the environment. In India, it’s a major crisis with 83 of the world’s 100 most polluted cities located here. Major causes include vehicular emissions, industrial pollution, coal-based power plants, agricultural stubble burning, construction dust, and household biomass burning. Health impacts are severe, with around 2 million premature deaths annually linked to air pollution, causing respiratory and cardiovascular diseases. Environmentally, it leads to acid rain, crop damage, and climate change. Economically, it reduces productivity and increases healthcare costs, with losses estimated at about 9.5% of India’s GDP. Government initiatives like the National Clean Air Programme (NCAP) aim to reduce PM2.5 and PM10 levels by up to 40% by 2026. Other measures include Bharat Stage VI emission norms, Pradhan Mantri Ujjwala Yojana for clean cooking fuel, and promotion of electric vehicles through FAME-II. Solutions require a mix of technology, policy, and public participation, focusing on clean energy, better waste management, and regional airshed approaches