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On Tuesday morning residents of this heavily contaminated metropolis were faced with inhaling extremely polluted air that registered in the "alarming" range.

Extremely High Pollution Measurements

Several parts of the city recorded an AQI above 500, which represents 10x the safe threshold recommended by the WHO.

Certain monitoring stations, levels of PM2.5 and PM10 reached peaks of eighteen hundred, representing 15 to 20 times higher than safe levels.

Firecracker Ban and Recent Developments

Beginning in 2020, the government had enforced a total prohibition on the sale and use of fireworks during the Festival of Lights due to their substantial impact to the dangerous pollution that covers the city as colder weather begins.

However recently, the current regional government approached the highest court to request a easing of the ban.

Officials advocated for allowing "environmentally conscious pyrotechnics" – which have been criticized by conservation groups as being only about 30% lower impact – as a balance between "cultural practices and ecological concerns".

Legal Decision and Reality

Much to the frustration of medical and ecological advocates, judges approved the proposal, specifying that environmentally conscious fireworks could be set off during designated hours throughout the Diwali.

During the celebrations, there was extensive flouting of the designated hours across the metropolis, with insufficient regulation regarding whether the fireworks being used were actually the more environmentally friendly variety.

Several monitoring devices throughout the city registered air quality spiking around the night hours to some of the worst measurements recorded during Diwali in at least the past three years.

Regional Implications

Extensive ignition of fireworks during the celebrations also triggered a controversy with bordering the neighboring country, with representatives in Pakistani the Punjab region pointing to deteriorating air quality in the city of Lahore on hazardous particles originating in across the border following the events.

Chronic Pollution Crisis

Extremely elevated concentrations of pollution in Delhi have persisted as a significant problem for fifteen-plus years, with the problem continuing to worsen.

Around celebratory seasons, the amount of hazardous airborne contaminants in the environment has been documented to increase dramatically to significantly exceeding the worst records ever measured in Beijing, which was formerly considered as the globally most contaminated urban center.

Diverse Contamination Factors

This crisis in the city is resulting from a combination of multiple factors including transportation pollution, construction debris, building projects, rubbish burning and haze from crop residue ignition in nearby regions of Punjab and Haryana.

Throughout these areas, agricultural workers routinely burn crop residue to clear them quickly, creating toxic haze that remains stagnant over the metropolitan area as winter air descends.

Health and Financial Impact

Public health and economic toll on the approximately 33 million inhabitants calling home the metropolitan zone is significant, according to multiple research.

These hazardous conditions results in high levels of neurological, heart and circulatory and lung disorders, and can even lead to oncological diseases.

The pollution is projected to be accounting for approximately 10k premature deaths annually in Delhi.