Pollution levels peak on Diwali day, air quality 'severe' in many part
India | October 27, 2019 14:41 ISTA thin layer of toxic haze hung over Delhi in the morning and the overall air quality index stood at 313 at 9 am. It continued its upward trend and was recorded at 337 at 1 pm. On Saturday, Delhi's overall air quality (302) was in the lower end of the "very poor" category