Tuesday brought inhabitants of this heavily contaminated metropolis were faced with exposed to extremely polluted air that registered in the "severe" range.
Multiple areas of the city showed an pollution measurement over 500, which equals a tenfold increase over the healthy threshold established by the global health authority.
Particular areas, concentrations of toxic particulate matter soared to of 1,800, amounting to 15-20x higher than safe levels.
Beginning in 2020, officials had enforced a comprehensive restriction on the sale and use of fireworks during celebrations due to their major role to the dangerous smog that engulfs the capital as the cold season sets in.
Yet earlier this year, the current local leadership approached the judicial authority to request a easing of the ban.
The suggestion was allowing "environmentally conscious pyrotechnics" – historically criticized by environmentalists as being only roughly 30 percent less polluting – as a middle ground between "cultural practices and ecological concerns".
Much to the frustration of medical and ecological activists, the court agreed to the proposal, mandating that eco-friendly pyrotechnics could be ignited during designated periods throughout the celebrations.
Throughout the festival evening, there was widespread disregard of the regulated periods across the city, with insufficient regulation regarding whether the pyrotechnics being used were actually the more environmentally friendly type.
Many monitoring devices throughout Delhi showed contamination reaching highest levels around late evening to some of the worst measurements observed during the festival in at least three years.
The proliferation of fireworks during the festival also triggered a dispute with adjacent the neighboring country, with authorities in Pakistan's Punjab province partly blaming deteriorating atmospheric conditions in Lahore on pollutants coming from neighboring India following the celebrations.
Alarmingly severe levels of air contamination in the city have continued as a significant challenge for over a decade and a half, with the condition gradually deteriorating.
Near celebratory seasons, the levels of toxic particulate matter in the air has been found to increase dramatically to seventy percent above the worst readings ever measured in China's capital, which was previously considered as the world's most polluted metropolis.
The situation in Delhi is caused by a combination of multiple factors including transportation pollution, airborne particles, development work, rubbish burning and pollutants from farm burning in adjacent states of Punjab and Haryana.
Throughout these areas, rural residents illegally burn crop residue to expedite field preparation, producing dangerous haze that then gets trapped over the capital as cooler air sets in.
The economic and health toll on the approximately 33 million people living in the Delhi area is enormous, according to various research.
This pollution causes increased incidence of neurological, cardiovascular and respiratory conditions, and can even lead to cancer.
The pollution is projected to be responsible for ten thousand untimely mortalities per year in Delhi.
Elara Vance is a Dutch market analyst and lifestyle blogger who specializes in curating premium products and sharing insights on sustainable shopping trends.