Mumbai, Nov. 9 -- The city's air quality deteriorated sharply on Sunday evening, with several monitoring stations across the city recording 'very poor' to 'severe' pollution levels after 8 pm. At the Chakala monitoring station in Andheri East, the Air Quality Index (AQI) surged to 483 at 10 pm, compared with 260 at 9 pm and just 42 at 8 pm, placing it in the severe category. The BKC monitoring station, managed by the Maharashtra Pollution Control Board (MPCB), recorded an AQI of 376 at 10 pm, up from 206 an hour earlier and 74 at 8 pm. Kherwadi in Bandra East also witnessed a sharp deterioration, with the AQI rising from 276.84 at 8 pm to 354.81 by 9 pm. Chembur recorded an AQI of 334 at 10 pm, compared with 72 at 9 pm, while Mindspace in Malad also reported a reading of 355 at 10 pm. P4...