New Delhi, Nov. 19 -- Delhi's air pollution has been stagnant for several days since entering the 'severe' range last week. This triggered the Commission for Air Quality Management (CAQM) to invoke Stage 3 restrictions of the Graded Response Action Plan (GRAP).

On 19 November, the national capital registered an average Air Quality Index (AQI) of 386, according to data recorded by the Central Pollution Control Board (CPCB) at 5:30 AM. This reading falls in the 'very poor' category.

Among 39 air quality monitoring stations across Delhi-NCR, 16 locations registered AQI in the 'severe' category (above 400).

Worst Air Quality: Wazirpur recorded the worst AQI at 446 (on a 500-measurement scale). Bawana was close behind at 444, and Jahangirpu...