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As Tuesday dawned inhabitants of the planet's dirtiest urban center found themselves breathing severely hazardous air that registered in the "critical" range.

Record-Breaking Air Quality Levels

Various sections of the city recorded an AQI exceeding 500, which equals ten times the safe level recommended by the World Health Organization.

Certain monitoring stations, levels of dangerous airborne particles hit highs of 1800, amounting to 15-20x higher than healthy limits.

Pyrotechnics Restrictions and Recent Policy Shifts

For the past four years, officials had maintained a complete ban on the purchase and ignition of firecrackers during Diwali due to their significant contribution to the dangerous smog that covers the capital as colder weather sets in.

Yet recently, the newly elected regional leadership approached the highest court to propose a relaxation of the restrictions.

Officials advocated for allowing "green crackers" – which have been criticized by environmental experts as being only approximately one-third less polluting – as a middle ground between "tradition and public health".

Court Decision and Reality

Despite concerns of public health and environmental activists, the court agreed to the appeal, specifying that eco-friendly pyrotechnics could be used during specific time windows throughout the Diwali.

On Monday night, there was extensive disregard of the time restrictions across the metropolis, with insufficient monitoring regarding whether the fireworks being used were actually the eco-friendly version.

Numerous recording stations throughout Delhi registered contamination peaking around the night hours to extremely hazardous readings observed during Diwali in at least the past three years.

Regional Consequences

Extensive ignition of fireworks during Diwali also sparked a dispute with adjacent Pakistan, with authorities in Pakistan's the Punjab region partially attributing worsening atmospheric conditions in the city of Lahore on hazardous particles originating in neighboring India following the celebrations.

Chronic Environmental Problem

Alarmingly severe levels of atmospheric toxins in the city have continued as a significant issue for fifteen-plus years, with the problem continuing to worsen.

Near celebratory seasons, the amount of toxic particles in the air has been documented to spike to 70% higher the peak records ever recorded in the Chinese city, which was once considered as the world's most polluted metropolis.

Multiple Contamination Sources

The problem in the capital is caused by a convergence of various sources including automobile exhaust, construction debris, building projects, garbage fires and smoke from agricultural fires in adjacent regions of neighboring agricultural zones.

Throughout these areas, farmers illegally set their fields on fire to prepare for next season, generating toxic pollution that then gets trapped over the city as cooler air arrives.

Public Health and Financial Impact

Public health and economic consequences on the approximately 33 million inhabitants living in the Delhi area is significant, according to multiple investigations.

The contaminated air leads to increased incidence of nervous system, heart and circulatory and respiratory conditions, and can potentially cause malignancies.

The pollution is projected to be responsible for 10,000 premature mortalities each year in the capital.