Ground-level ozone has started to emerge as Delhi’s lead pollutant during the day regularly over the last few days, particularly after good spells of rain, according to data from the Central Pollution Control Board. On March 31, when Delhi recorded its lowest 24-hour average AQI for the year at 73, it was still “satisfactory”, with both O3 and carbon monoxide …
Despite being this winter being the wettest, the overall winter average of PM2.5 has stayed elevated and the overall contribution of the local and regional sources were higher than that from stubble smoke, an analysis of winter pollution for Delhi-NCR by the Centre for Science and Environment showed on Wednesday. Avikal Somvanshi, Programme manager, Urban Lab Analytics, CSE, said: “Even …
A fresh analysis of the pollution data in and around the National Capital Region has revealed that 14 new locations recorded higher than average deterioration in air quality in winter time. The CSE said that these 14 hot spots recorded higher concentration of air pollutants than the mean of recognised hot spots - 197 micrograms per cubic metre. The CSE …
