What caused the recent unprecedented fog in Delhi-NCR? Decoding factors

While fog is not uncommon for Delhi and other parts of the national capital region (NCR) such as Ghaziabad, Noida and Gurugram during this time of the year, the cities witnessed freakishly foggy conditions that peaked on Friday night and continued till Saturday morning.

The intensity and duration of this particular spell of fog was never seen before for many in Delhi-NCR, some of whom took to social media to share visuals of the foggy scenes that showed nothing but ghostly haze that made even the nearest objects hard to see.