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On Tuesday morning citizens of the world's most polluted city found themselves breathing dangerously toxic air that registered in the "critical" range.

Record-Breaking Air Quality Readings

Multiple areas of the city registered an pollution measurement exceeding 500, which translates to ten times the safe limit set by the global health authority.

Certain monitoring stations, concentrations of PM2.5 and PM10 soared to of 1,800, amounting to fifteen to twenty times above healthy levels.

Pyrotechnics Prohibition and Recent Changes

For the past four years, officials had maintained a comprehensive restriction on the sale and use of pyrotechnics during celebrations due to their substantial impact to the dangerous pollution that blankets the city as winter approaches.

Yet in recent months, the newly elected city leadership petitioned the supreme court to propose a easing of the ban.

The suggestion was allowing "green crackers" – which have been questioned by environmentalists as being only roughly 30 percent lower impact – as a compromise between "tradition and ecological concerns".

Court Verdict and Implementation

Much to the frustration of medical and ecological activists, judicial authorities complied with the appeal, specifying that eco-friendly pyrotechnics could be used during limited 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 pyrotechnics being used were actually the eco-friendly type.

Many air quality sensors throughout the city registered pollution spiking around late evening to some of the worst measurements recorded during Diwali in at least recent memory.

Cross-Border Implications

The widespread use of firecrackers during the festival also triggered a dispute with adjacent Pakistan, with representatives in Pakistani the Punjab region partially attributing deteriorating atmospheric conditions in their urban centers on pollutants traveling from India following the festivities.

Persistent Pollution Crisis

Alarmingly severe readings of pollution in Delhi have persisted as a significant problem for more than 15 years, with the condition continuing to worsen.

During celebratory seasons, the amount of dangerous particles in the atmosphere has been documented to increase dramatically to 70% higher the peak records ever recorded in China's capital, which was once regarded as the globally most contaminated urban center.

Various Contamination Contributors

The situation in Delhi is caused by a convergence of various sources including automobile exhaust, dust, construction activities, waste incineration and pollutants from crop residue ignition in adjacent regions of farming communities.

Throughout these areas, rural residents illegally burn crop residue to prepare for next season, producing dangerous pollution that becomes contained over the capital as colder air arrives.

Medical and Financial Consequences

Both financial and medical consequences on the approximately 33 million people residing in the capital region is enormous, according to multiple studies.

The contaminated air results in high levels of nervous system, cardiovascular and breathing disorders, and can result in cancer.

Environmental contamination is estimated to be responsible for approximately 10k early deaths each year in the capital.