Delhi's Diwali Air Quality Hits Five-Year High for Pollution

Delhi's air quality deteriorated significantly during this year's Diwali celebrations, with the average Air Quality Index reaching 376—the highest recorded for the festival since 2021. The reading pushed the city into the 'very poor' category, indicating hazardous conditions for residents across the metropolis.

The thick layer of smog and fog that enveloped Delhi the morning after Diwali underscored the severity of the pollution event. The poor air quality reflects the cumulative impact of festive fireworks, vehicular emissions, and meteorological factors that typically converge during the post-monsoon season.

The deterioration in air quality comes amid ongoing concerns about Delhi's pollution levels during winter months, when atmospheric conditions trap pollutants closer to the ground. Experts attribute the seasonal pattern to reduced wind speeds and temperature inversions that prevent pollutants from dispersing into the upper atmosphere.

Authorities have previously advised residents to monitor air quality forecasts and take precautions during high pollution events. The recurring spike in pollution during major festivals has drawn attention to the need for stricter emissions controls and public awareness campaigns regarding air quality management.