Air pollution
According to a study done by Barman et al in Lucknow India, the amount of fine (PM2.5) particulates in the air can worsen following firework celebrations, but not during it. High accumulations of particulates produced from fireworks can remain suspended in the air for around 24 hours after their use. Another study indicated that ground-level ozone pollution is also generated by fireworks; their dispersal and decay times is also about one day.
On 9 October 2017, the Supreme Court of India banned the sale of fireworks in Delhi, but not their use.The court acted on the belief that banning festive use of fireworks would substantially improve the air quality of Delhi. (2016 Diwali celebrations saw PM2.5 levels easily exceed 30 times the safe level.) Critics state that this decision was a judicial overreach (as one could purchase their fireworks outside of Delhi instead) and that it is a bias against the Hindu culture, while supporters state it will improve public health (https://en.wikipedia.org/wiki/Diwali)
Fear Of Toxic Smog Leads India To Limit Diwali Fireworks
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