New Delhi, A smoky haze hung over Delhi on Diwali night, blurring streetlights and blanketing neighbourhoods as celebrations intensified across the capital, pushing air quality at 20. A thick layer of toxic smog engulfed central Delhi on Wednesday, with the AQI around India Gate and Kartavya Path hitting a severe 408. Smog-struck Delhi on Deepavali night as 20 stations record severe air quality, with EWS predicting continued deterioration amid firecrackers and smog.