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As Tuesday dawned residents of the planet's dirtiest urban center were faced with inhaling dangerously toxic air that was classified as the "severe" range.

Record-Breaking Air Quality Levels

Various sections of the city recorded an pollution measurement above 500, which represents a tenfold increase over the safe level set by the WHO.

Particular areas, readings of dangerous airborne particles reached peaks of 1800, equating to 15 to 20 times above safe levels.

Fireworks Ban and New Developments

For the past four years, the government had enforced a total prohibition on the sale and use of firecrackers during celebrations due to their significant contribution to the deadly pollution that engulfs the capital as the cold season begins.

However in recent months, the newly elected city government appealed to the supreme court to propose a modification of the ban.

Officials advocated for allowing "environmentally conscious pyrotechnics" – which have been doubted by environmentalists as being only approximately one-third reduced emissions – as a balance between "cultural practices and ecological concerns".

Judicial Verdict and Enforcement

Despite concerns of medical and ecological campaigners, judicial authorities agreed to the appeal, specifying that green firecrackers could be set off during limited time windows throughout the festival.

During the celebrations, there was widespread violation of the time restrictions across the capital, with minimal monitoring regarding whether the pyrotechnics being used were actually the supposedly greener variety.

Numerous recording stations throughout the city showed air quality peaking around late evening to some of the worst readings recorded during celebrations in at least three years.

Regional Implications

The widespread use of pyrotechnics during the celebrations also triggered a controversy with neighbouring the neighboring country, with authorities in Pakistani Punjab province partially attributing worsening pollution levels in Lahore on hazardous particles coming from India following the celebrations.

Long-Standing Environmental Crisis

Extremely elevated readings of air contamination in the capital have persisted as a significant issue for fifteen-plus years, with the problem showing no improvement.

During celebratory seasons, the concentration of hazardous particulate matter in the atmosphere has been documented to shoot up to 70% higher the most severe readings ever measured in Beijing, which was formerly viewed as the globally most contaminated city.

Various Contamination Sources

This crisis in the city is attributed to a convergence of multiple factors including transportation pollution, dust, building projects, garbage fires and haze from crop residue ignition in neighbouring states of Punjab and Haryana.

Within these states, rural residents illegally burn crop residue to clear them quickly, generating toxic smog that becomes contained over the city as winter air sets in.

Health and Economic Toll

Both financial and medical consequences on the approximately 33 million residents calling home the Delhi area is significant, according to various investigations.

This pollution causes increased incidence of neurological, heart and circulatory and breathing diseases, and can potentially cause cancer.

Air quality crisis is estimated to be accounting for approximately 10k untimely deaths per year in the capital.