About Nitrogen dioxide (NO2) is a gaseous air pollutant composed of nitrogen and oxygen. It is a reddish-brown, pungent, acidic gas that is corrosive and strongly oxidising. It is one of a group of highly reactive gases known as oxides …
About Air Quality Index (AQI) AQI is a number, which is a measure of air quality. The higher the AQI, the worse the air. The colour-coded AQI index was launched by the Government of India in 2014, and it helps …