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As Tuesday dawned citizens of this heavily contaminated metropolis found themselves exposed to severely hazardous air that was classified as the "critical" category.

Extremely High Pollution Readings

Multiple areas of the capital showed an air quality index exceeding 500, which equals ten times the healthy level established by the global health authority.

In some locations, readings of dangerous airborne particles soared to of 1,800, amounting to fifteen to twenty times higher than healthy limits.

Firecracker Restrictions and Current Developments

For the past four years, authorities had enforced a complete ban on the sale and use of fireworks during Diwali due to their significant contribution to the dangerous haze that engulfs the city as colder weather sets in.

Yet earlier this year, the current regional government approached the highest court to request a modification of the ban.

They proposed allowing "green crackers" – historically questioned by environmental experts as being only about 30% lower impact – as a compromise between "tradition and ecological concerns".

Legal Ruling and Implementation

Much to the frustration of public health and environmental advocates, the court complied with the proposal, stipulating that environmentally conscious fireworks could be ignited during limited time windows throughout the celebrations.

Throughout the festival evening, there was widespread flouting of the regulated periods across the city, with insufficient enforcement regarding whether the firecrackers being used were actually the supposedly greener version.

Many recording stations throughout the city registered pollution reaching highest levels around the night hours to the most severe measurements recorded during celebrations in at least recent memory.

Cross-Border Consequences

Extensive ignition of firecrackers during Diwali also triggered a dispute with bordering Pakistan, with officials in Pakistani the Punjab region pointing to declining air quality in the city of Lahore on contaminants traveling from neighboring India following the festivities.

Persistent Environmental Crisis

Alarmingly severe concentrations of air contamination in the city have remained as a significant problem for fifteen-plus years, with the situation continuing to worsen.

Near celebratory seasons, the concentration of toxic particulate matter in the environment has been found to shoot up to 70% higher the peak levels ever documented in the Chinese city, which was previously considered as the world's most polluted metropolis.

Various Pollution Sources

This crisis in Delhi is caused by a combination of different contributors including heavy vehicle emissions, construction debris, development work, garbage fires and haze from agricultural fires in adjacent areas of farming communities.

In these regions, rural residents regularly set their fields on fire to expedite field preparation, generating hazardous pollution that remains stagnant over the capital as winter air arrives.

Health and Financial Consequences

Both financial and medical consequences on the roughly thirty-three million inhabitants calling home the metropolitan zone is enormous, according to multiple studies.

The contaminated air results in elevated rates of neurological, cardiovascular and lung disorders, and can result in cancer.

Air quality crisis is calculated to be causing 10,000 premature deaths annually in the city.