Stubble burning not only to blame for alarming spike in air quality in Delhi: CSE report
New Delhi, Nov 7 (IANS) Delhi’s pollution level – PM2.5 concentration – saw its first huge spike of this winter season on November 2 with a sudden and staggering 68 per cent jump within 24 hours, crossing 313 microgramme per metre cubed which was equivalent to "severe plus" category as per the Air Quality Index (AQI) concentration range, the Centre for Science and Environment (CSE) said in its latest study.