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On Tuesday morning residents of the planet's dirtiest urban center encountered breathing severely hazardous air that fell into the "severe" range.

Alarming Pollution Measurements

Various sections of the city recorded an air quality index exceeding 500, which translates to 10x the safe level recommended by the global health authority.

In some locations, readings of dangerous airborne particles reached peaks of 1,800, amounting to 15-20x above healthy levels.

Firecracker Prohibition and Recent Policy Shifts

Beginning in 2020, the government had implemented a comprehensive restriction on the distribution and bursting of firecrackers during celebrations due to their substantial impact to the hazardous smog that engulfs the metropolis as the cold season begins.

Nevertheless in recent months, the recently formed local government petitioned the highest court to seek a easing of the ban.

The suggestion was allowing "green crackers" – which have been doubted by conservation groups as being only roughly 30 percent less polluting – as a compromise between "cultural practices and environment".

Court Decision and Enforcement

Much to the frustration of medical and ecological advocates, judicial authorities complied with the proposal, mandating that environmentally conscious fireworks could be used during designated hours throughout the celebrations.

During the celebrations, there was considerable disregard of the regulated periods across the city, with minimal regulation regarding whether the firecrackers being used were actually the eco-friendly variety.

Several recording stations throughout Delhi recorded pollution peaking around midnight to extremely hazardous readings seen during celebrations in at least three years.

International Effects

The widespread use of pyrotechnics during the celebrations also initiated a blame game with bordering the neighboring country, with officials in Pakistani Punjab partially attributing declining atmospheric conditions in the city of Lahore on pollutants originating in across the border following the festivities.

Chronic Pollution Crisis

Alarmingly severe readings of pollution in Delhi have remained as a significant issue for over a decade and a half, with the problem gradually deteriorating.

Near celebratory seasons, the levels of toxic particulate matter in the air has been observed to spike to 70% higher the most severe records ever measured in the Chinese city, which was previously viewed as the globally most contaminated metropolis.

Multiple Contamination Factors

The situation in Delhi is attributed to a convergence of multiple factors including automobile exhaust, construction debris, construction activities, waste incineration and pollutants from crop residue ignition in neighbouring areas of Punjab and Haryana.

Throughout these areas, rural residents routinely ignite agricultural waste to expedite field preparation, producing toxic smog that becomes contained over the city as cooler air arrives.

Health and Financial Toll

Public health and economic consequences on the nearly 33 million residents residing in the metropolitan zone is significant, according to various investigations.

The contaminated air leads to increased incidence of nervous system, cardiovascular and respiratory disorders, and can potentially cause cancer.

The pollution is estimated to be accounting for ten thousand early fatalities annually in the city.