Air Quality in Kolkata & Howrah Deteriorates After Kali Puja, Firecrackers Blamed.
Kolkata, October 21:The air quality in Kolkata and adjoining Howrah deteriorated sharply on the night of Kali Puja, with environmentalists blaming rampant use of firecrackers beyond the permitted hours. According to data from the West Bengal Pollution Control Board (WBPCB), the Air Quality Index (AQI) in several areas crossed dangerous levels late on Monday night.


