India’s capital Delhi is choking. Post-Diwali, Air Quality Index has degraded from very poor to severe. The air quality is so hazardous that the Supreme Court has announced Public Health Emergency till November 5, 2019.

Apart from multiple reasons, stubble burning in the neighbouring states of Punjab, Haryana and Uttar Pradesh accounts for 20-30% of the PM 2.5 in Delhi’s air. Air Quality Index is measured in terms of the presence of pollutants like PM 2.5 and PM 10