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As Tuesday dawned citizens of the planet's dirtiest urban center were faced with inhaling severely hazardous air that registered in the "critical" range.

Record-Breaking Air Quality Readings

Various sections of the city recorded an pollution measurement exceeding 500, which represents 10x the healthy level established by the WHO.

Particular areas, levels of dangerous airborne particles reached peaks of 1800, representing 15-20x above healthy standards.

Pyrotechnics Prohibition and New Developments

For the past four years, the government had maintained a total prohibition on the purchase and ignition of pyrotechnics during the Festival of Lights due to their substantial impact to the dangerous pollution that engulfs the metropolis as winter begins.

However earlier this year, the recently formed regional government petitioned the supreme court to request a modification of the ban.

The suggestion was allowing "environmentally conscious pyrotechnics" – historically criticized by environmentalists as being only approximately one-third less polluting – as a balance between "heritage and ecological concerns".

Legal Ruling and Reality

Despite concerns of medical and ecological campaigners, judicial authorities complied with the proposal, stipulating that green firecrackers could be ignited during specific hours throughout the celebrations.

Throughout the festival evening, there was extensive violation of the regulated periods across the capital, with minimal monitoring regarding whether the fireworks being used were actually the supposedly greener version.

Numerous monitoring devices throughout the capital registered air quality spiking around the night hours to the most severe levels recorded during the festival in at least three years.

Cross-Border Consequences

The proliferation of pyrotechnics during Diwali also initiated a dispute with neighbouring Pakistan, with authorities in Pakistani the Punjab region partly blaming declining pollution levels in their urban centers on hazardous particles coming from across the border following the events.

Long-Standing Pollution Problem

Extremely elevated concentrations of air contamination in Delhi have continued as a significant problem for more than 15 years, with the problem showing no improvement.

Near celebratory seasons, the levels of toxic particles in the environment has been found to spike to seventy percent above the most severe readings ever measured in Beijing, which was formerly viewed as the planet's dirtiest city.

Various Contamination Factors

This crisis in the capital is caused by a combination of different contributors including heavy vehicle emissions, airborne particles, construction activities, rubbish burning and smoke from agricultural fires in adjacent areas of neighboring agricultural zones.

Within these states, agricultural workers illegally ignite agricultural waste to clear them quickly, creating hazardous smog that then gets trapped over the city as cooler air sets in.

Medical and Economic Impact

Public health and economic impact on the nearly 33 million residents calling home the metropolitan zone is substantial, according to various investigations.

These hazardous conditions leads to elevated rates of neurological, heart and circulatory and respiratory disorders, and can result in cancer.

The pollution is estimated to be causing approximately 10k premature mortalities annually in the capital.