India, Dec. 2 -- Delhi's air quality slipped back into hazardous territory on Tuesday evening, with pollution levels climbing rapidly across the city and several neighbourhoods crossing into the 'severe' category.

By 9 pm, the national capital recorded AQI of 390, a sharp jump from 304 on Monday and 279 on Sunday, data from the Central Pollution Control Board (CPCB) showed.

Out of 39 monitoring locations, 19 stations registered AQI levels above 400, marking a return to conditions known to cause serious health impacts.

Areas recording severe pollution included Burari, Anand Vihar, Mundka, Bawana, Vivek Vihar, Rohini, Sonia Vihar, Ashok Vihar, Punjabi Bagh and several others.

Delhiites shouldn't expect cleaner air just yet. The Air Qual...