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As Tuesday dawned citizens of the world's most polluted city were faced with exposed to dangerously toxic air that was classified as the "alarming" level.

Alarming Air Quality Measurements

Multiple areas of Delhi showed an pollution measurement over 500, which represents ten times the safe level recommended by the WHO.

Particular areas, levels of PM2.5 and PM10 hit highs of 1,800, amounting to 15 to 20 times above healthy levels.

Pyrotechnics Prohibition and Recent Developments

Beginning in 2020, authorities had maintained a comprehensive restriction on the purchase and ignition of pyrotechnics during Diwali due to their significant contribution to the hazardous pollution that engulfs the city as the cold season begins.

Yet earlier this year, the recently formed city leadership petitioned the supreme court to seek a easing of the prohibition.

Officials advocated for allowing "eco-friendly fireworks" – historically criticized by conservation groups as being only about 30% reduced emissions – as a compromise between "cultural practices and ecological concerns".

Legal Decision and Implementation

To the disappointment of environmental and health advocates, judges approved the proposal, stipulating that green firecrackers could be ignited during limited periods throughout the Diwali.

On Monday night, there was widespread violation of the time restrictions across the capital, with little monitoring regarding whether the fireworks being used were actually the supposedly greener version.

Several monitoring devices throughout the capital registered air quality reaching highest levels around late evening to some of the worst measurements seen during celebrations in at least the past three years.

International Consequences

The proliferation of fireworks during Diwali also initiated a blame game with adjacent the neighboring country, with officials in Pakistan's Punjab province pointing to worsening atmospheric conditions in the city of Lahore on contaminants originating in neighboring India following the celebrations.

Chronic Environmental Crisis

The dangerously high readings of air contamination in the city have remained as a significant issue for over a decade and a half, with the problem gradually deteriorating.

During the festival period, the levels of toxic particles in the air has been found to spike to 70% higher the most severe readings ever recorded in Beijing, which was previously regarded as the globally most contaminated urban center.

Various Contamination Sources

This crisis in the city is resulting from a convergence of different contributors including transportation pollution, dust, construction activities, waste incineration and pollutants from farm burning in nearby regions of Punjab and Haryana.

Throughout these areas, rural residents regularly burn crop residue to clear them quickly, creating hazardous pollution that remains stagnant over the city as cooler air arrives.

Medical and Financial Consequences

Public health and economic impact on the nearly 33 million people calling home the Delhi area is enormous, according to various investigations.

This pollution causes high levels of neurological, cardiovascular and lung disorders, and can even lead to malignancies.

The pollution is projected to be causing approximately 10k premature fatalities each year in the city.