Delhi’s air quality very poor, vehicular emissions largest contributor

New Delhi, November 16, 2023.

Delhi’s air quality fluctuated between the very poor and severe categories on Thursday as unfavourable meteorological conditions hindered the dispersion of pollutants.

Recent findings from a joint project by the Delhi government and IIT-Kanpur found that vehicular emissions accounted for about 38 percent of the capital’s air pollution on Wednesday. This is projected to rise to 40 percent on Thursday.

Secondary inorganic aerosols — particles such as sulfate and nitrate that are formed in the atmosphere due to the interaction of gases and particulate pollutants from sources like power plants, refineries, and vehicles — is the second major contributor to Delhi’s foul air, accounting for 30 to 35 percent of the air pollution in the city over the last few days.