Mumbai Swelters: Air Quality Plummets Amidst Heatwave

Mumbai has been ranked as the fifth most polluted city globally and the highest in India, facing elevated air quality concerns. This situation has emerged following a dry monsoon season and early rainfall withdrawal, coinciding with a notable increase in heat and humidity. The city recorded an Air Quality Index (AQI) of 152, classified as unhealthy, with ground-level ozone identified as the main pollutant.

Atmospheric scientists attribute the poor air quality to an El Niño-like climate pattern, high temperatures, and significantly reduced wind speeds. These conditions limit air circulation, allowing pollutants to concentrate near the ground. Ground-level ozone forms when nitrogen oxides and volatile organic compounds react in sunlight, a process accelerated by hot, sunny weather.

While iQAir reported Mumbai's AQI at 152, the Central Pollution Control Board (CPCB) showed a lower figure of 98. However, local monitoring stations within Mumbai indicated considerable variations, with some areas like Deonar recording AQI levels as high as 156. The Brihanmumbai Municipal Corporation (BMC) has initiated checks across 26 wards to locate pollution hotspots and implement targeted local solutions.