Government agencies such as SAFAR had predicted Delhi could encounter severe levels of pollution from November 8 even if 50% of the firecrackers as compared to 2017 were burst this year.
Besides fire-related injuries, the national capital Thursday saw cases of allergy and respiratory complications.
Mumbai Mirror conducted a pollution test drive and joined volunteers of Aawaz Foundation to see how noisy the city was and Urban Sciences employee Naved Nakadar to check the air quality this Diwali.
The overall AQI was 10 times the permissible limit.
A thick haze settled over Delhi on November 8 as firecracker emissions mixed with the air.
Ambient air quality in what the World Health Organisation (WHO) has said is the world's most polluted major city touched 595 on Thursday morning, according to the United States embassy in Delhi which independently monitors pollution levels. However, reports have claimed that Delhi is not the most polluted city in the country.
Meanwhile, curbs on pollution in Delhi continued, with the Traffic Police stopping trucks from entering the Capital, on orders of the Transport Department, said sources.
The capital city was followed by Kolkata with recording the same AQI. Similarly, air pollution levels, at 305ìg/m3, were also slightly less than last year's 366 ìg/m3, but it still fell in the "severe" category.
Last month, in a bid to control pollution, the Supreme Court allowed the use of "green" firecrackers for Diwali but only if they were let off between 8-10 pm.
According to SAFAR, the air quality in Delhi had "improved significantly" since Thursday, but the recovery was "slow due to low surface wind speed". The Central Pollution Control Board's (CPCB) air quality forecast suggests that air quality will continue at "very poor" levels for the next three days across NCR.
Violations of the Supreme Court order were reported from Mayur Vihar Extension, Lajpat Nagar, Lutyens Delhi, IP extension, Dwarka, Noida Sector 78 among other places.
Admitting that violations were observed, police said it was manually not possible to monitor every incident considering the population of the city and a complete ban on firecrackers can't be imposed till the entire community is willing to join hands.