New Delhi, Dec. 29 -- The national capital, Delhi, woke up to a chilly morning on Monday, with air quality deteriorating as the city's Air Quality Index (AQI) touched 402 at 8 am, slipping into the "severe" category, according to the Central Pollution Control Board (CPCB).

For comparison, the city recorded an AQI of 390 at 4 pm on December 28, placing it in the 'very poor' category. According to the CPCB, several areas across the city recorded worse air quality, with AQI levels exceeding 400.

Anand Vihar recorded an AQI of 455, while Bawana registered 411. Several other locations across the capital also witnessed severe pollution levels. Areas such as Wazirpur (443), Rohini (442), Punjabi Bagh (426), and Patparganj (431) saw further det...