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On Tuesday morning residents of this heavily contaminated metropolis encountered exposed to dangerously toxic air that fell into the "severe" category.

Record-Breaking Pollution Measurements

Several parts of the city registered an AQI over 500, which equals a tenfold increase over the safe threshold recommended by the global health authority.

Certain monitoring stations, readings of dangerous airborne particles hit highs of 1800, representing fifteen to twenty times higher than safe limits.

Firecracker Ban and Current Policy Shifts

Since 2020, officials had enforced a complete ban on the sale and use of fireworks during celebrations due to their significant contribution to the deadly pollution that blankets the metropolis as winter begins.

However recently, the newly elected regional leadership petitioned the judicial authority to propose a relaxation of the prohibition.

Officials advocated for allowing "environmentally conscious pyrotechnics" – previously doubted by conservation groups as being only approximately one-third reduced emissions – as a balance between "tradition and public health".

Judicial Verdict and Reality

Much to the frustration of medical and ecological advocates, judicial authorities agreed to the appeal, stipulating that green firecrackers could be used during designated periods throughout the Diwali.

On Monday night, there was extensive flouting of the designated hours across the city, with minimal monitoring regarding whether the fireworks being used were actually the eco-friendly type.

Many air quality sensors throughout Delhi recorded pollution reaching highest levels around the night hours to the most severe levels recorded during the festival in at least recent memory.

Cross-Border Consequences

The proliferation of firecrackers during Diwali also initiated a dispute with neighbouring Pakistan, with officials in Pakistan's the Punjab region pointing to deteriorating atmospheric conditions in their urban centers on contaminants coming from neighboring India following the celebrations.

Persistent Pollution Crisis

The dangerously high concentrations of pollution in the city have remained as a significant problem for more than 15 years, with the condition gradually deteriorating.

Around the festival period, the levels of dangerous particulate matter in the atmosphere has been documented to spike to seventy percent above the most severe levels ever recorded in Beijing, which was formerly considered as the world's most polluted city.

Multiple Pollution Factors

This crisis in the city is caused by a convergence of various sources including heavy vehicle emissions, airborne particles, building projects, rubbish burning and smoke from crop residue ignition in neighbouring states of Punjab and Haryana.

Within these states, agricultural workers routinely set their fields on fire to expedite field preparation, creating hazardous haze that remains stagnant over the city as colder air sets in.

Health and Economic Consequences

Both financial and medical toll on the nearly 33 million people living in the metropolitan zone is substantial, according to numerous investigations.

This pollution causes increased incidence of neurological, cardiovascular and respiratory diseases, and can even lead to cancer.

Environmental contamination is calculated to be accounting for 10,000 untimely mortalities annually in the capital.