Resource detail

Ozone levels have shot up in Delhi and the gas is causing severe health problems for asthmatics and those with respiratory illnesses in the city, according to a recent study by the CSE (Centre for Science and Environment).Analysis of real-time air quality data from key monitoring stations of the DPCC (Delhi Pollution Control Committee) from January to early June shows the rapid build-up of ozone and frequent deviation from pollution standards this summer.“Ozone levels must be curbed at the early stages with stringent controls on nitrogen oxides and other toxic and volatile gases, the major ingredients of ozone recipe,” said Anumita Roychowdhury, head of CSE’s air pollution programme. The ozone level shot up by 87% in Civil Lines, 171% in Punjabi Bagh, 315% at Mandir Marg and 82% at IGI airport, within a week, shows the study. The average ozone level at all locations was 73 microgramme per cubic metre on June 1, that quickly doubled beyond the standards by June 5.