Air quality in Delhi, adjoining areas turns 'severe' as people defy cracker ban on Diwali
India | November 14, 2020 18:58 ISTDelhi's air quality turned "severe" on Diwali with stubble burning accounting for 32 percent of the city's PM2.5 pollution and calm winds worsening the situation as they allowed the accumulation of pollutants, weather officials said.