India, Nov. 13 -- Delhiites woke up to another morning shrouded in smog on Thursday, as the city's air quality remained in the 'severe' category for the third consecutive day. The average air quality index (AQI) stood at 405 around 8am, only slightly better than 418 at 4pm on Wednesday, when the Central Pollution Control Board (CPCB) issued its daily national bulletin.

The national capital and Jind in Haryana were the joint-most polluted cities in the country on Wednesday.

The AQI in Delhi reached 428 on Tuesday, the highest since December 19 last year, when it was 451. Akin to Wednesday, winds continue to remain slow, with low temperatures leading to inversion. Inversion is characterised by a layer of warm air sitting on top of cooler ...