Amid noise over cracker ban in Delhi, Diwali day of last 6 years has seen spike in pollution

Despite a firecracker ban around Diwali since 2017, PM 2.5 and sulphur dioxide levels spike significantly due to firework emissions.

On Nov 12, Diwali day, last year, the hourly PM2.5 at Anand  Vihar was 127 micrograms per cubic metre at 7pm. It quicklysoared to 1,985 micrograms per cubic metre in five hours aft ..

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http://timesofindia.indiatimes.com/articleshow/114701743.cms?utm_source=contentofinterest&utm_medium=text&utm_campaign=cppst

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Delhi gets slight relief from polluted air, thanks to wind