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

Record-Breaking Air Quality Readings

Various sections of the capital showed an air quality index over 500, which translates to ten times the recommended level established by the World Health Organization.

Certain monitoring stations, concentrations of toxic particulate matter hit highs of eighteen hundred, amounting to fifteen to twenty times higher than acceptable limits.

Fireworks Ban and New Developments

For the past four years, authorities had maintained a comprehensive restriction on the distribution and bursting of firecrackers during the Festival of Lights due to their major role to the hazardous smog that engulfs the capital as winter sets in.

Nevertheless in recent months, the recently formed city administration petitioned the supreme court to request a modification of the ban.

Officials advocated for allowing "green crackers" – historically questioned by conservation groups as being only about 30% reduced emissions – as a compromise between "heritage and ecological concerns".

Legal Verdict and Enforcement

Despite concerns of public health and environmental advocates, the court complied with the proposal, specifying that environmentally conscious fireworks could be set off during designated time windows throughout the celebrations.

Throughout the festival evening, there was considerable flouting of the time restrictions across the metropolis, with insufficient enforcement regarding whether the firecrackers being used were actually the more environmentally friendly type.

Many monitoring devices throughout Delhi recorded pollution spiking around late evening to extremely hazardous measurements seen during Diwali in at least three years.

Regional Effects

The proliferation of fireworks during the celebrations also sparked a blame game with adjacent Pakistan, with authorities in Pakistan's the Punjab region partially attributing deteriorating air quality in the city of Lahore on pollutants coming from India following the celebrations.

Chronic Environmental Problem

Alarmingly severe readings of pollution in Delhi have persisted as a significant challenge for fifteen-plus years, with the problem showing no improvement.

Around Diwali, the levels of hazardous particles in the air has been documented to increase dramatically to significantly exceeding the worst levels ever measured in the Chinese city, which was formerly viewed as the world's most polluted urban center.

Multiple Contamination Sources

The situation in the city is resulting from a convergence of different contributors including heavy vehicle emissions, dust, development work, rubbish burning and smoke from crop residue ignition in adjacent regions of farming communities.

Throughout these areas, farmers illegally ignite agricultural waste to clear them quickly, creating toxic smog that becomes contained over the capital as winter air sets in.

Medical and Economic Consequences

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

This pollution leads to increased incidence of nervous system, cardiovascular and breathing disorders, and can potentially cause cancer.

The pollution is projected to be responsible for 10,000 early deaths each year in the capital.