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AQI (Air Quality Index) | Concerns mount as Calcutta s air quality deteriorates to poor as smog shrouds city

An official of the West Bengal Pollution Control Board (WBPCB) told PTI that the city's annual average reading is 174 PM2.5 levels

Mamata s Green Cracker cluster proposal raises eyebrows of environmentalists

They feel that it is doubtful how far the Chief Minister’s proposal will be practical, considering the sound decibel norms imposed by the West Bengal Pollution Control Board

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