Supreme Court is set to hear pleas on Diwali firecracker restrictions on Thursday, as a judge flags Delhi’s worsening air quality after the festival and the court considers regulated use of less-polluting crackers. Justice Vikram Nath remarked that Delhi’s air quality would worsen after Diwali while hearing an adjournment request.The Supreme Court will hear petitions seeking a complete ban or regulated use of firecrackers in Delhi-NCR.