Winds help Kolkata breathe easy, Bulbul may bring more relief

A day after Kolkata’s air turned fouler than Delhi’s and the air quality index (AQI) hovered around the 400-mark at various locations, strong northwesterly winds on Thursday dispersed some of the pollutants hanging heavy in the air. At Ballygunge, the AQI fell to 232, which was still in the ‘poor’ category, while in Salt Lake it dipped below

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