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As Tuesday dawned citizens of this heavily contaminated metropolis were faced with inhaling extremely polluted air that was classified as the "alarming" category.

Record-Breaking Pollution Readings

Various sections of the city registered an pollution measurement above 500, which equals ten times the safe level established by the World Health Organization.

In some locations, readings of toxic particulate matter soared to of 1,800, equating to 15 to 20 times exceeding healthy levels.

Pyrotechnics Prohibition and New Changes

For the past four years, officials had implemented a comprehensive restriction on the purchase and ignition of fireworks during Diwali due to their significant contribution to the hazardous haze that blankets the city as the cold season begins.

Nevertheless in recent months, the newly elected local leadership approached the judicial authority to seek a easing of the prohibition.

They proposed allowing "eco-friendly fireworks" – previously criticized by environmentalists as being only roughly 30 percent less polluting – as a middle ground between "heritage and environment".

Legal Ruling and Reality

Despite concerns of medical and ecological advocates, judicial authorities approved the appeal, specifying that green firecrackers could be set off during designated periods throughout the celebrations.

Throughout the festival evening, there was widespread violation of the designated hours across the capital, with insufficient regulation regarding whether the firecrackers being used were actually the more environmentally friendly type.

Several monitoring devices throughout the capital registered contamination spiking around the night hours to some of the worst readings seen during Diwali in at least the past three years.

International Effects

Extensive ignition of pyrotechnics during Diwali also sparked a controversy with bordering Pakistan, with representatives in Pakistani the Punjab region partially attributing deteriorating air quality in Lahore on pollutants originating in across the border following the festivities.

Long-Standing Environmental Issue

Extremely elevated levels of air contamination in the capital have remained as a significant issue for fifteen-plus years, with the problem gradually deteriorating.

Around the festival period, the concentration of toxic particulate matter in the environment has been found to shoot up to 70% higher the most severe records ever recorded in Beijing, which was once regarded as the globally most contaminated urban center.

Multiple Pollution Factors

The problem in Delhi is resulting from a convergence of multiple factors including heavy vehicle emissions, airborne particles, development work, garbage fires and haze from agricultural fires in nearby states of neighboring agricultural zones.

Throughout these areas, rural residents regularly set their fields on fire to expedite field preparation, producing dangerous haze that becomes contained over the capital as colder air descends.

Health and Financial Toll

The economic and health toll on the roughly thirty-three million residents calling home the capital region is significant, according to multiple studies.

This pollution results in high levels of neurological, cardiovascular and lung conditions, and can result in malignancies.

The pollution is estimated to be accounting for approximately 10k premature deaths each year in the city.