New Delhi, Oct. 24 -- New Delhi Not only Delhi, the entire Indo-Gangetic Plains were battling "very poor" air quality, according to data from the Central Pollution Control Board (CPCB) in its air quality index (AQI) bulletin on Friday, and several of these cities were bordering on "severe" air as meteorological conditions remained hostile for a second day in a row. Since Thursday, winds reduced over the region and their direction become variable, shifting to northeasterly for a few hours and northwesterly for the rest of the time.

This led to the entire stretch -- Panipat, Kurukshetra, Hisar, Gurugram, Greater Noida, Ghaziabad, Faridabad, Fatehabad, Bulandshahr, Bhiwadi, Bahadurgarh, and Ballabgarh, among others -- recording "very poor" ai...