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On Tuesday morning citizens of the planet's dirtiest urban center were faced with breathing dangerously toxic air that was classified as the "severe" level.

Record-Breaking Air Quality Measurements

Multiple areas of Delhi showed an pollution measurement above 500, which equals a tenfold increase over the safe threshold recommended by the World Health Organization.

In some locations, concentrations of PM2.5 and PM10 hit highs of 1800, equating to fifteen to twenty times higher than acceptable limits.

Pyrotechnics Restrictions and Current Developments

Beginning in 2020, officials had maintained a total prohibition on the distribution and bursting of fireworks during the Festival of Lights due to their significant contribution to the dangerous smog that covers the capital as the cold season sets in.

However in recent months, the newly elected city leadership approached the highest court to propose a easing of the ban.

They proposed allowing "green crackers" – previously criticized by conservation groups as being only roughly 30 percent less polluting – as a compromise between "tradition and public health".

Judicial Ruling and Implementation

Much to the frustration of public health and environmental campaigners, judges complied with the request, mandating that environmentally conscious fireworks could be used during limited time windows throughout the festival.

During the celebrations, there was extensive violation of the designated hours across the metropolis, with minimal enforcement regarding whether the fireworks being used were actually the eco-friendly version.

Several air quality sensors throughout Delhi showed air quality reaching highest levels around late evening to some of the worst levels seen during celebrations in at least three years.

Regional Effects

The widespread use of pyrotechnics during the celebrations also triggered a blame game with adjacent Pakistan, with representatives in Pakistan's Punjab pointing to deteriorating pollution levels in their urban centers on contaminants traveling from India following the festivities.

Chronic Pollution Crisis

Alarmingly severe levels of pollution in the city have remained as a major issue for fifteen-plus years, with the situation gradually deteriorating.

Near Diwali, the levels of dangerous particles in the environment has been observed to increase dramatically to 70% higher the peak records ever recorded in Beijing, which was once viewed as the planet's dirtiest metropolis.

Multiple Pollution Sources

This crisis in the city is caused by a convergence of various sources including automobile exhaust, airborne particles, building projects, rubbish burning and pollutants from agricultural fires in neighbouring areas of neighboring agricultural zones.

Within these states, farmers regularly set their fields on fire to expedite field preparation, creating hazardous smog that becomes contained over the city as cooler air sets in.

Medical and Financial Consequences

Public health and economic consequences on the nearly 33 million inhabitants living in the capital region is significant, according to multiple investigations.

These hazardous conditions results in increased incidence of nervous system, cardiovascular and lung disorders, and can even lead to malignancies.

Environmental contamination is calculated to be causing approximately 10k early deaths annually in Delhi.