Tuesday brought inhabitants of this heavily contaminated metropolis were faced with exposed to extremely polluted air that fell into the "alarming" level.
Multiple areas of Delhi recorded an pollution measurement exceeding 500, which equals ten times the healthy threshold established by the WHO.
Particular areas, readings of PM2.5 and PM10 soared to of 1,800, equating to 15 to 20 times higher than acceptable standards.
Beginning in 2020, the government had implemented a total prohibition on the distribution and bursting of fireworks during celebrations due to their substantial impact to the hazardous smog that covers the capital as winter sets in.
However recently, the current regional government appealed to the highest court to propose a modification of the restrictions.
The suggestion was allowing "green crackers" – previously doubted by conservation groups as being only about 30% lower impact – as a balance between "cultural practices and environment".
Despite concerns of environmental and health advocates, judicial authorities approved the proposal, mandating that environmentally conscious fireworks could be set off during limited hours throughout the festival.
Throughout the festival evening, there was extensive disregard of the designated hours across the capital, with minimal regulation regarding whether the firecrackers being used were actually the more environmentally friendly version.
Many air quality sensors throughout the city registered pollution peaking around late evening to extremely hazardous readings recorded during the festival in at least three years.
The widespread use of firecrackers during the celebrations also sparked a dispute with adjacent Pakistan, with representatives in Pakistan's Punjab province pointing to deteriorating pollution levels in the city of Lahore on pollutants traveling from neighboring India following the events.
The dangerously high readings of pollution in the capital have remained as a serious issue for over a decade and a half, with the condition continuing to worsen.
Around celebratory seasons, the amount of toxic particulate matter in the air has been observed to increase dramatically to seventy percent above the peak levels ever recorded in the Chinese city, which was once considered as the planet's dirtiest urban center.
The problem in Delhi is resulting from a convergence of various sources including automobile exhaust, dust, building projects, waste incineration and smoke from crop residue ignition in neighbouring states of Punjab and Haryana.
In these regions, rural residents routinely burn crop residue to clear them quickly, generating toxic smog that becomes contained over the metropolitan area as winter air sets in.
The economic and health impact on the approximately 33 million inhabitants calling home the capital region is substantial, according to numerous research.
The contaminated air results in increased incidence of neurological, cardiovascular and respiratory disorders, and can even lead to malignancies.
The pollution is calculated to be accounting for approximately 10k early mortalities per year in the city.
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