India, Oct. 21 -- Delhi woke up on Tuesday to a thick blanket of grey smog, reduced visibility, and hazardous air as post-Diwali pollution sent the city's Air Quality Index (AQI) spiraling into the 'very poor' zone. Many residents flouted the Supreme Court's two-hour limit on firecrackers, celebrating late into the night.

According to data from the Central Pollution Control Board (CPCB), Delhi recorded an AQI of 352 at 8 am, up from 346 at 5 am and 351 at 7 am, indicating a sustained rise in pollution levels. The 24-hour average AQI on Monday was reported at 345, placing it firmly in the 'very poor' category.

An AQI between 301 and 400 falls under the 'very poor' range, meaning prolonged exposure may cause respiratory discomfort. On Mon...