Kolkata's air quality improves by 90% after cyclone-induced rain

December 07, 2021 10:32

When it rains, AQI improves.

Kolkata's air quality improved by around 80-90 per cent after Cyclone Jawad-induced rain lashed the city in the last couple of days, pollution control board officials and environmentalists said on Tuesday.

The Air Quality Index (AQI) of 20 (good) was registered at Victoria Memorial, 43 (good) at Ballygunge, 33 (good) at Rabindra Sarobar, and 51 (satisfactory) at Rabindra Bharati University at 7 AM on Tuesday, as per data provided by the Central Pollution Control Board. It was 185 (moderate) at Victoria Memorial, 212 (poor) at Ballygunge, 163 (moderate) at Rabindra Sarobar, and 307 (very poor) at Rabindra Bharati University at 9 am on December 3 before the rain kicked in, it said.

"A maximum of 90 per cent and a minimum of 80 per cent improvement in the AQI of Kolkata was reported after the cyclone-induced rain lashed the city. This was a record low for the city in the month of December in the last 40 years," Environmentalist S M Ghosh told PTI.

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