Air quality in Delhi, adjoining areas turns 'severe' as people defy cracker ban on Diwali
India | Nov 14, 2020, 06:58 PM 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.