Swiss Pollution Data Misleading, Says Pcba | Guwahati News
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GUWAHATI: Pollution Control Board, Assam (PCBA) on Wednesday said the Swiss company, IQ Air, report showing Guwahati as the second most polluted city in the world last year is misleading.
The board has also sent a detailed report to the central and the state govts on this and appealed to the people to continue with normal life without any fear.
The board clarified that “there is no need to panic as the air pollution level in Guwahati is absolutely under control”.
PCBA member secretary Shantanu Kumar Dutta said the board monitors the ambient air quality in Guwahati round the clock through sophisticated Continuous Ambient Air Quality Monitoring Stations (CAAQMS) at four locations — PCBA headquarters at Bamunimaidam, Cotton University, Lokpriya Gopinath Bordoloi International Airport and IIT-Guwahati. “Data from these stations are being continuously monitored. The quality data generated from these stations are recorded by the Central Pollution Control Board which can be accessed online,” he added.
Dutta said the record of air quality data of Guwahati generated from these stations reflects average monthly PM2.5 concentration at 52.8 micrograms per cubic metre (µg/m3) last year with maximum concentration (98.3µg/m3) recorded in July and minimum concentration (22.62 µg/m3) recorded in January last year. He added that the average PM2.5 concentration in the year 2022 in Guwahati city was 52.61 (µg/m3).
“These data contradicts the report of IQAir, whose data source is not known. According to the IQAir report, the average PM2.5 concentration in Guwahati for the year 2023 has been reported as 105.4 (µg/m3), which is almost 200% more than the actual recorded value by the central govt through CPCB and state boards,” he added.
Dutta said under the National Clean Air Programme (NCAP), Assam govt has been implementing various action plans to improve the ambient air quality in Guwahati besides four other towns in the state.
“With the implementation of the NCAP action plan by various stake-holding departments, including the PWD, transport department and GMC, it is possible to maintain air quality in the city in terms of average PM2.5 concentration last year,” he added.

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