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On Tuesday morning inhabitants of this heavily contaminated metropolis found themselves breathing extremely polluted air that registered in the "critical" range.

Record-Breaking Air Quality Readings

Various sections of the city recorded an AQI exceeding 500, which translates to 10x the healthy limit recommended by the WHO.

Certain monitoring stations, readings of PM2.5 and PM10 reached peaks of 1,800, equating to 15-20x above safe limits.

Firecracker Prohibition and Current Policy Shifts

Beginning in 2020, authorities had implemented a complete ban on the sale and use of fireworks during the Festival of Lights due to their significant contribution to the dangerous haze that engulfs the city as the cold season begins.

Nevertheless in recent months, the recently formed regional administration petitioned the supreme court to propose a easing of the restrictions.

The suggestion was allowing "green crackers" – historically criticized by environmental experts as being only roughly 30 percent reduced emissions – as a compromise between "tradition and public health".

Court Verdict and Enforcement

To the disappointment of environmental and health campaigners, judicial authorities approved the request, stipulating that eco-friendly pyrotechnics could be ignited during specific hours throughout the Diwali.

Throughout the festival evening, there was considerable flouting of the time restrictions across the metropolis, with insufficient monitoring regarding whether the pyrotechnics being used were actually the eco-friendly version.

Numerous recording stations throughout the capital showed pollution peaking around late evening to some of the worst readings seen during celebrations in at least recent memory.

Regional Effects

The proliferation of fireworks during the celebrations also triggered a blame game with neighbouring Pakistan, with officials in Pakistani the Punjab region partly blaming deteriorating air quality in the city of Lahore on contaminants coming from neighboring India following the events.

Chronic Environmental Problem

Alarmingly severe concentrations of pollution in the city have continued as a major problem for fifteen-plus years, with the condition continuing to worsen.

Near the festival period, the amount of hazardous particulate matter in the environment has been observed to spike to significantly exceeding the peak records ever measured in China's capital, which was formerly viewed as the planet's dirtiest metropolis.

Diverse Pollution Factors

This crisis in the capital is attributed to a mix of multiple factors including transportation pollution, airborne particles, building projects, garbage fires and haze from agricultural fires in nearby areas of Punjab and Haryana.

Throughout these areas, farmers regularly burn crop residue to prepare for next season, creating toxic pollution that remains stagnant over the city as cooler air arrives.

Health and Economic Impact

Public health and economic consequences on the roughly thirty-three million people residing in the Delhi area is enormous, according to various studies.

This pollution causes increased incidence of neurological, cardiovascular and breathing disorders, and can result in oncological diseases.

Environmental contamination is calculated to be causing approximately 10k premature deaths each year in the capital.