Mumbai vs Chennai pollution: Why Diwali left one coastal city with ‘poor’ air

Diwali celebrations in Mumbai and Chennai resulted in significantly different air quality levels, with Mumbai experiencing 'poor' air quality while Chennai's was 'moderate'.

Experts attribute this to Mumbai's higher population density, industrial activities, and traffic congestion, which exacerbate pollution levels.

The incident highlights the impact of festive activities on urban air quality and the need for stricter regulations.