Among India's top 10 polluted cities in January, two were in Bihar, two in Rajasthan, two in Uttar Pradesh, one in Assam, one in Haryana, and one in Himachal Pradesh.
Environmental scientists point out that uncontrolled burning of waste, construction dust, use of wood for cooking, vehicular exhaust fumes and meteorological conditions are among the major factors behind the surge.
While the Ballygunge area in the southern part of the city recorded an air quality index (AQI) of 296 at 6 pm on Thursday, Bidhannagar (284) in the east and Jadavpur (252) in the south were not far behind at the same time of the day, a West Bengal Pollution Control Board (WBPCB) official said as reported by news agency PTI., Kolkata News, Times Now
Mumbai air pollution: A total of 584 km of roads in Mumbai are being regularly washed and cleaned to control dust as part of efforts to curb air pollution