Delhi PM2.5 levels rose by 68 per cent within a day in early November: CSE

Rapid build-up in short timespan able to tip air quality into severe category as local pollution already very high, says thinktank   Photo: Vikas Choudhary / CSE Delhi’s pollution level — Particulate Matter (PM)2.5 concentration — saw its first huge spike of this winter season on November 2, 2023, with a sudden and staggering 68 per cent … Read more