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As Tuesday dawned inhabitants of the world's most polluted city were faced with inhaling extremely polluted air that registered in the "severe" level.

Record-Breaking Air Quality Levels

Multiple areas of the capital recorded an air quality index above 500, which represents a tenfold increase over the healthy limit set by the WHO.

Certain monitoring stations, concentrations of PM2.5 and PM10 reached peaks of 1,800, amounting to 15-20x higher than acceptable limits.

Fireworks Restrictions and Recent Changes

Beginning in 2020, officials had maintained a comprehensive restriction on the purchase and ignition of pyrotechnics during the Festival of Lights due to their significant contribution to the hazardous haze that blankets the capital as colder weather approaches.

Nevertheless recently, the current local leadership appealed to the highest court to propose a easing of the ban.

The suggestion was allowing "eco-friendly fireworks" – historically criticized by conservation groups as being only about 30% reduced emissions – as a balance between "cultural practices and ecological concerns".

Court Verdict and Enforcement

Much to the frustration of medical and ecological advocates, the court complied with the request, stipulating that environmentally conscious fireworks could be set off during specific time windows throughout the celebrations.

Throughout the festival evening, there was extensive disregard of the time restrictions across the capital, with insufficient regulation regarding whether the fireworks being used were actually the supposedly greener type.

Several air quality sensors throughout the city recorded pollution peaking around the night hours to extremely hazardous levels recorded during the festival in at least three years.

Regional Implications

Extensive ignition of firecrackers during Diwali also triggered a blame game with bordering Pakistan, with authorities in Pakistan's Punjab partially attributing deteriorating air quality in Lahore on contaminants coming from neighboring India following the celebrations.

Long-Standing Environmental Crisis

Alarmingly severe levels of atmospheric toxins in the capital have persisted as a major challenge for fifteen-plus years, with the problem showing no improvement.

Around celebratory seasons, the amount of dangerous particles in the environment has been found to spike to seventy percent above the worst levels ever documented in China's capital, which was once considered as the globally most contaminated city.

Various Contamination Contributors

This crisis in Delhi is resulting from a convergence of multiple factors including automobile exhaust, construction debris, construction activities, garbage fires and pollutants from agricultural fires in neighbouring regions of Punjab and Haryana.

In these regions, rural residents illegally ignite agricultural waste to expedite field preparation, generating toxic haze that then gets trapped over the capital as colder air descends.

Medical and Financial Consequences

Both financial and medical impact on the approximately 33 million people residing in the Delhi area is enormous, according to various research.

The contaminated air causes high levels of nervous system, cardiovascular and respiratory conditions, and can even lead to cancer.

Air quality crisis is projected to be causing 10,000 untimely fatalities each year in the city.