Air pollution is one of the most dangerous forms of pollution. A biological, chemical, and physical alteration of the air occurs when smoke, dust, and any harmful gases enter into the atmosphere and make it difficult for all living beings to survive as the air becomes contaminated. Over the past few years, Delhi and its adjoining areas have gained notoriety for having some of the most polluted air in the world. For example this winter season on November 3, 2023 the average air quality in the national capital plummeted from “very poor” to “severe” category with the air quality index (AQI) value reaching a staggering/hazardous 468. AQI values over 100 are considered unhealthy. This paper is an attempt to analyse the causes and effect of Air Pollution in National Capital Territory and methods of prevention in legal context. While being globally sensitive, the country needs an Environmental policy and planning that must be based on local needs. Finally, if sustainable development has to move from mere wishful thinking and slogan mongering I a reality, the world (developed and developing countries) as a whole has to move towards a new world order in which new economic and technological orders are dovetailed.