India court bans fireworks in Delhi after Diwali smog BBC News Diwali fireworks ' worsen Delhi pollution ' Diwali fireworks choke Delhi , angering Indians Diwali in Delhi A colourful night turns smoggy grey On Friday , the Supreme Court suspended the possession , stocking and selling of fireworks in Delhi and its neighbouring suburbs until further orders . Image copyright EPA Image caption Diwali is one of most popular festivals in India India ' s Supreme Court has stopped the sale of firecrackers in the capital , Delhi , and directed authorities to study their harmful effects . Image copyright AP Image caption Delhi was covered in a thick , grey blanket of smog the day after Diwali Pollution in Delhi increased to nearly 10 times the safe level after this year ' s Diwali celebrations , causing panic and outrage . Residents awoke from a night of colourful fireworks to find the city covered in a thick grey blanket of smog . Delhi , with 16 million people , is one of the world ' s most polluted cities .