New Delhi, Oct. 21 -- Delhi residents woke up to heavy grey haze darkening the city skies, reduced visibility and the air quality in the 'red zone' on Tuesday morning as many Delhiites choose to celebrate Diwali by bursting firecrackers beyond the two-hour limit set by the Supreme Court.

According to a Central Pollution Control Board (CPCB) bulletin, Delhi's Air Quality Index (AQI) stood at 359, in the 'very poor' category, at 11 am. It was 352 at 8 am, 346 at 5 am, 347 at 6 am and 351 at 7 am.

Toxic air in capital city spiralled to more than 23 times the United Nation's daily health limits on October 21.

Troubled by the deteriorating air quality in the city, a Redditor complained of breathing problems due to firecrackers. In the viral...