SHILLONG, Jan 29: Byrnihat was the only town among 231 across India placed in the “severe” category with an air quality index (AQI) of 412, a bulletin of the Central Pollution Control Board (CPCB) said on Wednesday. Neighbouring Guwahati, Delhi, Haryana’s Gurugram, and Bihar’s Hajipur and Muzaffarpur were categorised as “very poor”. The remaining urban […]

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