Delhi awakes to a toxic haze after Diwali as pollution season begins

Air breathed by people in the city categorised as severe' in quality after fireworks contribute to thick smog

Delhi awoke to a thick haze on Tuesday, a day after millions of people celebrated the Hindu festival of Diwali with fireworks, marking the beginning of the pollution season that has become an annual blight on India's capital.

Those in the most polluted city in the world once again found themselves breathing dangerously toxic air that fell into the severe" category on Tuesday morning.