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On Tuesday morning citizens of this heavily contaminated metropolis encountered exposed to severely hazardous air that registered in the "severe" range.

Alarming Pollution Levels

Multiple areas of the city registered an air quality index above 500, which represents ten times the healthy level recommended by the WHO.

In some locations, concentrations of dangerous airborne particles hit highs of eighteen hundred, amounting to 15-20x exceeding acceptable standards.

Fireworks Prohibition and New Developments

Beginning in 2020, the government had maintained a complete ban on the sale and use of pyrotechnics during the Festival of Lights due to their substantial impact to the hazardous pollution that engulfs the city as colder weather begins.

Nevertheless earlier this year, the newly elected local government approached the supreme court to request a relaxation of the restrictions.

The suggestion was allowing "green crackers" – which have been questioned by conservation groups as being only roughly 30 percent reduced emissions – as a balance between "heritage and environment".

Legal Decision and Enforcement

Despite concerns of environmental and health campaigners, judicial authorities agreed to the appeal, specifying that environmentally conscious fireworks could be ignited during designated hours throughout the festival.

Throughout the festival evening, there was widespread flouting of the regulated periods across the capital, with insufficient monitoring regarding whether the pyrotechnics being used were actually the eco-friendly variety.

Many air quality sensors throughout Delhi recorded pollution spiking around the night hours to some of the worst levels observed during Diwali in at least the past three years.

Regional Effects

The proliferation of fireworks during Diwali also triggered a dispute with adjacent the neighboring country, with officials in Pakistan's the Punjab region partly blaming declining pollution levels in their urban centers on pollutants traveling from neighboring India following the events.

Chronic Environmental Problem

The dangerously high levels of pollution in the city have continued as a major issue for fifteen-plus years, with the condition continuing to worsen.

Near celebratory seasons, the amount of hazardous particulate matter in the environment has been observed to spike to significantly exceeding the worst readings ever recorded in the Chinese city, which was previously regarded as the globally most contaminated metropolis.

Various Pollution Factors

The situation in the capital is resulting from a combination of different contributors including automobile exhaust, airborne particles, construction activities, garbage fires and pollutants from agricultural fires in nearby regions of neighboring agricultural zones.

Throughout these areas, rural residents regularly set their fields on fire to clear them quickly, generating hazardous haze that then gets trapped over the metropolitan area as colder air arrives.

Public Health and Financial Impact

Public health and economic toll on the nearly 33 million inhabitants calling home the Delhi area is enormous, according to various studies.

The contaminated air results in increased incidence of nervous system, cardiovascular and breathing disorders, and can even lead to oncological diseases.

The pollution is estimated to be accounting for 10,000 untimely mortalities per year in the city.