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On Tuesday morning inhabitants of the planet's dirtiest urban center were faced with exposed to severely hazardous air that was classified as the "severe" range.

Extremely High Air Quality Measurements

Various sections of Delhi registered an pollution measurement exceeding 500, which equals ten times the healthy threshold recommended by the World Health Organization.

Particular areas, readings of toxic particulate matter reached peaks of 1800, amounting to 15-20x higher than acceptable limits.

Firecracker Ban and Recent Changes

Beginning in 2020, authorities had maintained a complete ban on the purchase and ignition of fireworks during Diwali due to their major role to the hazardous smog that blankets the city as colder weather sets in.

Nevertheless recently, the current city government approached the judicial authority to seek a easing of the prohibition.

They proposed allowing "green crackers" – historically questioned by conservation groups as being only approximately one-third less polluting – as a middle ground between "tradition and ecological concerns".

Judicial Decision and Reality

Much to the frustration of environmental and health activists, judicial authorities approved the appeal, mandating that environmentally conscious fireworks could be set off during specific periods throughout the festival.

On Monday night, there was extensive flouting of the time restrictions across the capital, with insufficient regulation regarding whether the firecrackers being used were actually the supposedly greener variety.

Numerous recording stations throughout Delhi registered contamination reaching highest levels around midnight to extremely hazardous measurements observed during celebrations in at least the past three years.

International Consequences

The widespread use of pyrotechnics during the festival also sparked a controversy with adjacent Pakistan, with authorities in Pakistan's Punjab pointing to deteriorating pollution levels in their urban centers on pollutants traveling from India following the festivities.

Chronic Pollution Crisis

Extremely elevated levels of air contamination in Delhi have persisted as a major issue for over a decade and a half, with the situation showing no improvement.

Near celebratory seasons, the amount of toxic particles in the atmosphere has been documented to shoot up to significantly exceeding the worst records ever documented in China's capital, which was previously considered as the world's most polluted urban center.

Various Pollution Factors

This crisis in the capital is caused by a combination of various sources including automobile exhaust, dust, building projects, waste incineration and pollutants from agricultural fires in neighbouring areas of Punjab and Haryana.

In these regions, agricultural workers routinely burn crop residue to prepare for next season, producing dangerous pollution that becomes contained over the metropolitan area as cooler air descends.

Health and Economic Consequences

Both financial and medical toll on the approximately 33 million people residing in the capital region is substantial, according to numerous studies.

The contaminated air causes increased incidence of nervous system, cardiovascular and breathing conditions, and can even lead to cancer.

Air quality crisis is estimated to be accounting for ten thousand premature fatalities per year in Delhi.