A day after Delhi-NCR celebrated Diwali, the air quality remained ‘very poor’. At Delhi’s Anand Vihar, the AQI stood at 362. In Noida’s Sec `116, the AQI was recorded at 380 while it was 406 in Ghaziabad’s Loni, according to CPCB data. Across North India, AQI in various cities remained in the “poor” to “very poor” category.cEven though the Supreme Court had banned firecrackers that were not green in 2018, bursting of firecrackers remained unabated on Diwali. Meanwhile, Haryana and Punjab fire cases almost doubled in the past two days as per System of Air Quality and Weather Forecasting And Research. The authorities have imposed a ban on overnight construction activities. Coal-based industries have been shut till October 30.