Delhi enters 'red zone' as pollution levels cross 400 mark, AQI 'severe'

Air quality in Delhi deteriorated further on Saturday, with pollution levels breaching the 400 mark in several areas and placing the city among the most polluted in the country. The 24-hour average Air Quality Index (AQI) stood at 361, categorised as very poor, while stations in Alipur, ITO, Nehru Nagar, Vivek Vihar, Wazirpur, and Burari recorded severe levels above 400, according to Central Pollution Control Board data.