If anyone is wondering why Delhi and the neighbouring NCR territories didn't immediately see the sort of ‘air’pocalypse that we saw post-Diwali last year, it is important to understand that air pollution is a complex science and air quality is affected not just by physical, chemical, and geographical issues, but also meteorological factors.
But, the airpocalypse its coming. Any day now.
Don't get me wrong. The current air quality (AQ) levels are hovering between "very poor/unhealthy" and "severe/hazardous" – so, pollution is still very high. But Delhi residents have been fortunate this year that local winds have blown away much of the particulate matter caused by burning of crop stubble, firecrackers, and other regular combustion, keeping PM levels lower than what it was last year, when the air was still.


