Mumbai vs Chennai air quality after Diwali: Why did Diwali leave one coastal city with ‘poor’ air?

After Diwali celebrations, Mumbai's air quality has been categorized as 'poor' while Chennai's remains 'moderate'. Experts attribute this to Mumbai's higher population density and industrial activities.

The air quality index (AQI) in Mumbai reached 176, indicating 'unhealthy' conditions, while Chennai's AQI was 101, considered 'moderate'.