The Air high quality stage was a lot better in Kolkata on the night of Kali puja and Diwali on Saturday, in comparison with that on the competition day final yr, as bursting of firecrackers was a lot much less following a excessive courtroom order, an official of the West Bengal Air pollution Management Board (WBPCB) stated.
The Air High quality Index (AQI) measured on the automated air monitoring station in Rabindra Bharati College in north Kolkata was 226 (PM 2.5) until late night this yr, whereas it was past 700 in 2019, he stated.
An AQI between 101 and 200 is taken into account average, 201-300 ”poor”, 301- 400 ”very poor” and 401-500 ”extreme”, whereas the AQI above 500 falls within the extreme plus class.
The AQI hovered between 300 and 500 in pockets throughout the town final yr, whereas it was 151 at Bidhannagar in east Kolkata, 142 at Ballygunge within the southern a part of the town and 115 at Victoria air station in central Kolkata on Saturday, the official stated.
“There have been very sporadic one or two circumstances of bursting of firecrackers and fireworks,” he stated.
The Calcutta Excessive Court docket had final week ordered a blanket ban on using fireworks in West Bengal throughout Kali puja, Diwali, Chhath and different pujas throughout this festive season to curb air pollution amid the COVID-19 pandemic. Within the earlier years, solely firecrackers that emit over 90 decibels of sound weren’t allowed by the WBPCB, and there was no ban on fireworks that emit gentle.
Requested on complaints acquired from throughout the state in regards to the violation of the excessive courtroom order, the official stated, “Our management room is monitoring the state of affairs 24×7. Up to now the state of affairs stays largely below management.
Environmentalist S M Ghosh stated, “Because the sound of crackers is much less to date, it appears there was some impact of the blanket ban on fireworks. Nevertheless, the state of affairs must be monitored and analysed tomorrow morning to reach at a conclusion.”
Nevertheless, the AQI readings on Saturday night have been a bit greater throughout the town in comparison with these prior to now few days, the WBPCB official stated.
“The weather conditions in mid-November, the density of particulates within the air, the upper variety of smaller automobiles on competition evenings, greater industrial actions may need contributed to the spurt within the AQI stage. Now we have to analyse,” he stated.