Mumbai's Air Quality Plummets Over Diwali Festival Period

Mumbai experienced a sharp degradation in air quality during the Diwali festival period, with the Air Quality Index (AQI) more than doubling over a 48-hour window. The index rose from 131 to 278, indicating a shift from moderate to very poor air quality levels that typically prompt health advisories for vulnerable populations.

Professor Gufran Baig of the National Institute of Advanced Studies attributed the dramatic increase to changing meteorological conditions. Over the two-day period, wind patterns originating from the Arabian Sea underwent significant shifts in both speed and direction.

According to experts, the altered wind dynamics failed to effectively disperse accumulated pollutants from the atmosphere. The combination of reduced wind dispersion capacity and increased particulate matter from Diwali festivities—traditionally marked by fireworks and celebrations—created conditions for rapid air quality deterioration across the metropolis.

The incident underscores the complex interplay between meteorological factors and pollution levels during India's major festival season, when air quality typically worsens across urban centers during the October-November period.