Winter pollution crisis in Indian megacities: What the CSE report says
The blanket of haze that shrouds most big cities in India has grown denser as air quality continues to dip. Last winter was no different with pollution levels soaring way above permissible limits and posing major risks to public health. A recent analysis of winter pollution during 2024-25 by the Centre for Science and Environment (CSE) highlights alarming pollution trends in India’s megacities, with Delhi leading with the worst air quality. Even megacities outside the Indo-Gangetic Plains (IGP) have seen escalating air quality challenges, despite relatively favourable climatic conditions. One significant trend across cities like Kolkata, Mumbai, Hyderabad, Chennai, and Bengaluru is the increase in localised pollution. The report analysed PM2.5 data from October 1st to January 31st over the past four winters. As cities and their residents grapple with the debilitating symptoms of pollution-related illnesses, these findings call for stringent measures and targeted action to tackle poor air quality.
