New Delhi: Concentration of PM2.5, tiny airborne particles that can get absorbed into the bloodstream and pose significant health risks, surged by midnight to the second-highest recorded in Delhi over the past five Diwalis, but plummeted just as rapidly by Tuesday afternoon.

This drop for a post-Diwali day, experts told ThePrint, was mainly because of weather conditions and a lower-than-usual count of farm fires.

Central Pollution Control Board (CPCB) data shows that Delhi’s concentration of PM2.5 peaked at an hourly average of 675 micrograms per cubic metres (ug/m3) at midnight on 21 October. But it was down to 82 ug/m3 by 3 pm Tuesday. Show Full Article

“It is quite common for Diwali night to see extreme pollution, and then a steep fall the next morning. As the sun rises, the parti

See Full Page