Byrnihat in Meghalaya topped the list of the most polluted cities in India in 2023, closely followed by Begusarai in Bihar and Greater Noida in Uttar Pradesh, according to a report released recently.

Delhi, known for its persistently high air pollution levels during winter, ranked as the eighth most polluted city, the report by independent think tank Centre for Research on Energy and Clean Air (CREA) said.

Sunil Dahia, South Asia's analyst at CREA, said 227 cities with air quality data available for over 75 per cent of the days in 2023 were studied.