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On Tuesday morning citizens of this heavily contaminated metropolis found themselves inhaling severely hazardous air that fell into the "critical" level.

Record-Breaking Pollution Readings

Several parts of Delhi recorded an pollution measurement exceeding 500, which equals ten times the safe limit set by the WHO.

Certain monitoring stations, concentrations of PM2.5 and PM10 hit highs of eighteen hundred, amounting to 15 to 20 times higher than acceptable limits.

Pyrotechnics Restrictions and Current Developments

For the past four years, the government had maintained a total prohibition on the sale and use of fireworks during the Festival of Lights due to their substantial impact to the dangerous haze that blankets the capital as colder weather sets in.

Yet in recent months, the recently formed local government approached the highest court to request a modification of the prohibition.

They proposed allowing "eco-friendly fireworks" – historically criticized by environmental experts as being only roughly 30 percent reduced emissions – as a middle ground between "heritage and public health".

Judicial Ruling and Reality

Much to the frustration of environmental and health campaigners, judges complied with the request, stipulating that green firecrackers could be set off during limited periods throughout the celebrations.

On Monday night, there was widespread disregard of the time restrictions across the capital, with little regulation regarding whether the pyrotechnics being used were actually the more environmentally friendly version.

Several recording stations throughout the capital registered pollution spiking around the night hours to the most severe levels recorded during celebrations in at least the past three years.

International Implications

Extensive ignition of pyrotechnics during the festival also sparked a controversy with bordering the neighboring country, with representatives in Pakistan's Punjab pointing to declining pollution levels in Lahore on pollutants coming from across the border following the festivities.

Persistent Environmental Issue

The dangerously high levels of atmospheric toxins in Delhi have persisted as a major challenge for fifteen-plus years, with the problem showing no improvement.

Around celebratory seasons, the amount of hazardous airborne contaminants in the environment has been documented to spike to seventy percent above the worst records ever measured in China's capital, which was previously regarded as the planet's dirtiest metropolis.

Various Contamination Factors

The problem in Delhi is caused by a mix of various sources including heavy vehicle emissions, airborne particles, construction activities, waste incineration and haze from agricultural fires in adjacent areas of neighboring agricultural zones.

Within these states, agricultural workers regularly burn crop residue to expedite field preparation, producing dangerous pollution that then gets trapped over the city as winter air descends.

Medical and Financial Impact

Public health and economic toll on the roughly thirty-three million residents calling home the Delhi area is substantial, according to multiple investigations.

These hazardous conditions leads to increased incidence of nervous system, cardiovascular and lung disorders, and can even lead to oncological diseases.

Air quality crisis is estimated to be responsible for ten thousand early mortalities per year in Delhi.