New Delhi, Dec. 4 -- Delhi's air quality improved significantly on Thursday morning, with the overall Air Quality Index (AQI) standing at 299 at 8 am, according to data from the Central Pollution Control Board (CPCB).

For comparison, the city recorded an AQI of 342 at 4 pm on December 3, placing it in the 'very poor' category. According to CPCB, the air quality in some parts of the National Capital improved and was classified in the 'poor category'. Najafgarh recorded an AQI of 286, while IGI Airport T3 reported 255. Sri Aurobindo Marg and North Campus registered AQI of 283 and 281, respectively.

But despite slight improvement, several parts of the city remained shrouded in a dense layer of toxic smog. Areas like Ghazipur and Akshardham...