Delhi sets off self-destruct bomb, worst Diwali in 4 years

The firecracker ban in Delhi-NCR went up in smoke on Saturday with people flouting it with impunity. While the sound of crackers could be heard during the day, its intensity rose after 6pm and continued well past midnight at some locations. The average hourly PM2.5 concentration in Delhi touched 910 micrograms per cubic metre (g/m3) at midnight, over 15 times the safe standard, before falling due to an increase in wind speed

source https://timesofindia.indiatimes.com/india/delhi-sets-off-self-destruct-bomb-worst-diwali-in-4-years/articleshow/79239581.cms