Delhi marks second-longest streak of ‘very poor’ air days
Officials said the prolonged run this year is being driven by a combination of stagnant winds and falling temperatures. Forecasts by the Air Quality Early Warning System (AQEWS) indicate that the situation is unlikely to improve in the next six days, with wind speeds expected to remain low. Delhi’s air quality index (AQI) remained above 300 for the 23rd consecutive day, the second-longest spell of ‘very poor’ or worse air days since 2019, according to Central Pollution Control Board (CPCB) data. At 4pm, when the CPCB releases its daily national bulletin, the Capital’s average AQI registered at 369. The current streak began on November 6, and has included three days of “severe” air between November 11 and 13. The longest streak came last year, when Delhi logged 32 consecutive days of ‘very poor’ or worse air between October 30 and November 30, including a peak of 494 (severe) on November 18. The CPCB classifies air as ‘good’ when AQI is 50 or lower; ‘satisfactory’ between 51 and 100; ‘moderate’ between 101 and 200; ‘poor’ between 201 and 300; ‘very poor’ between 301 and 400; and ‘severe’ when it exceeds 400. Officials said the prolonged run this year is being driven by a combination of stagnant winds and falling temperatures. Forecasts by the Air Quality Early Warning System (AQEWS) indicate that the situation is unlikely to improve in the next six days, with wind speeds expected to remain low. Despite this, the Commission for Air Quality Management (CAQM) this week rolled back measures under Stage 3 of the Graded Response Action Plan (GRAP), allowing an end to the ‘Work from Home’ mandate and hybrid classes for classes 5 and lower, as well as the resumption of construction activities. Experts say that the prolonged streak exposes systemic failures in pollution control. ‘Tackle local emissions round the year’ Calling it a “public health emergency”, a Centre for Science and Environment (CSE) report warned that residents are breathing toxic pollution through the year, not just during the peak season. Its latest ‘Agenda for Action for Delhi-NCR’, released on November 27, said transport alone contributes 39%, the maximum, to Delhi’s PM2.5 load, with industry and construction making up 20%, and road dust accounting for 18%.
