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As Tuesday dawned citizens of the world's most polluted city encountered inhaling extremely polluted air that was classified as the "alarming" range.

Record-Breaking Air Quality Readings

Multiple areas of Delhi showed an pollution measurement over 500, which represents a tenfold increase over the safe limit set by the global health authority.

Certain monitoring stations, readings of toxic particulate matter soared to of 1,800, representing 15 to 20 times above safe limits.

Fireworks Restrictions and Current Policy Shifts

Since 2020, authorities had maintained a total prohibition on the purchase and ignition of pyrotechnics during Diwali due to their significant contribution to the dangerous smog that engulfs the metropolis as colder weather begins.

However in recent months, the newly elected local government approached the highest court to request a relaxation of the prohibition.

They proposed allowing "green crackers" – which have been criticized by conservation groups as being only about 30% lower impact – as a balance between "tradition and public health".

Judicial Ruling and Enforcement

Despite concerns of environmental and health activists, the court approved the request, mandating that environmentally conscious fireworks could be used during specific time windows throughout the festival.

On Monday night, there was extensive flouting of the regulated periods across the metropolis, with insufficient regulation regarding whether the pyrotechnics being used were actually the supposedly greener variety.

Numerous recording stations throughout Delhi showed pollution reaching highest levels around the night hours to some of the worst levels recorded during the festival in at least recent memory.

Regional Effects

The proliferation of fireworks during the celebrations also initiated a blame game with bordering the neighboring country, with representatives in Pakistan's the Punjab region pointing to worsening air quality in the city of Lahore on contaminants traveling from across the border following the events.

Chronic Environmental Crisis

Extremely elevated concentrations of atmospheric toxins in the city have persisted as a serious challenge for over a decade and a half, with the condition gradually deteriorating.

Near the festival period, the amount of hazardous airborne contaminants in the atmosphere has been found to increase dramatically to significantly exceeding the most severe levels ever documented in the Chinese city, which was previously regarded as the planet's dirtiest city.

Various Pollution Factors

The problem in the city is resulting from a convergence of different contributors including heavy vehicle emissions, construction debris, building projects, garbage fires and haze from agricultural fires in neighbouring regions of Punjab and Haryana.

Within these states, agricultural workers routinely set their fields on fire to expedite field preparation, producing toxic pollution that becomes contained over the metropolitan area as cooler air arrives.

Medical and Financial Impact

Both financial and medical consequences on the approximately 33 million people residing in the metropolitan zone is substantial, according to numerous investigations.

The contaminated air causes elevated rates of nervous system, cardiovascular and lung disorders, and can even lead to oncological diseases.

The pollution is projected to be causing approximately 10k untimely fatalities annually in the city.