The Indian capital woke up to toxic smog yesterday after Diwali revellers defied a firecracker ban and risked jail to celebrate the annual Hindu festival.
According to international monitoring company IQAir, harmful PM 2.5 particles surged to 350 on the air quality index — more than three times the reading a day earlier.
The reading for the particulates — so tiny they can penetrate deep into the lungs and enter the bloodstream — is more than 23 times the recommended daily maximum set by the World Health Organisation.
The PM 2.5 reading had eased to around 145 by mid-morning, still nearly 10 times the WHO limit.
A report by IQAir in 2020 found that 22 of the world’s 30 most polluted cities were in India.
New Delhi imposed a ban on the sale and use of firecrackers last month and announced that those flouting the ban could face up to six months in jail.
Many of the Indian capital’s roughly 20mn residents were still able to get hold of firecrackers, setting them alight into the early hours.
However, broadcaster NDTV reported that Delhi’s pollution levels after Monday’s Diwali celebrations year were the lowest in four years.
The festival fell relatively early this year in mild weather.
Delhi Chief Minister Arvind Kejriwal said residents were “working hard” and that there had been encouraging results. “But there is still a long way to go,” he tweeted early yesterday.
Diwali is celebrated at roughly the same time when farmers in neighbouring states burn stubble after their harvest.
Firecracker smoke combines in winter with farm fires and industrial and vehicular emissions to form a toxic cocktail that is blamed for huge numbers of premature deaths.
People walk along a road near India Gate amid smoggy conditions in New Delhi yesterday.