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As Tuesday dawned citizens of the planet's dirtiest urban center were faced with breathing extremely polluted air that was classified as the "critical" category.

Extremely High Pollution Measurements

Various sections of Delhi registered an air quality index over 500, which equals 10x the recommended limit set by the global health authority.

Certain monitoring stations, levels of PM2.5 and PM10 hit highs of 1800, amounting to fifteen to twenty times higher than acceptable levels.

Fireworks Prohibition and Recent Changes

Beginning in 2020, officials had implemented a complete ban on the purchase and ignition of pyrotechnics during the Festival of Lights due to their substantial impact to the dangerous haze that covers the metropolis as colder weather sets in.

Yet earlier this year, the recently formed regional leadership appealed to the highest court to propose a modification of the ban.

The suggestion was allowing "green crackers" – historically criticized by environmentalists as being only approximately one-third less polluting – as a balance between "heritage and ecological concerns".

Judicial Decision and Enforcement

Despite concerns of medical and ecological campaigners, judicial authorities agreed to the appeal, stipulating that environmentally conscious fireworks could be used during designated time windows throughout the festival.

Throughout the festival evening, there was considerable disregard of the designated hours across the metropolis, with insufficient enforcement regarding whether the firecrackers being used were actually the eco-friendly version.

Several monitoring devices throughout the capital registered air quality reaching highest levels around late evening to the most severe readings seen during Diwali in at least three years.

Regional Effects

The widespread use of fireworks during Diwali also initiated a controversy with neighbouring the neighboring country, with representatives in Pakistani the Punjab region partially attributing declining air quality in the city of Lahore on contaminants coming from India following the celebrations.

Long-Standing Environmental Crisis

Alarmingly severe readings of air contamination in the capital have continued as a significant issue for over a decade and a half, with the problem continuing to worsen.

Near the festival period, the amount of hazardous particulate matter in the air has been observed to shoot up to significantly exceeding the most severe readings ever documented in Beijing, which was previously considered as the planet's dirtiest metropolis.

Multiple Contamination Sources

The problem in Delhi is caused by a convergence of different contributors including automobile exhaust, construction debris, development work, rubbish burning and haze from agricultural fires in neighbouring regions of neighboring agricultural zones.

In these regions, agricultural workers illegally set their fields on fire to expedite field preparation, producing hazardous smog that becomes contained over the capital as cooler air descends.

Medical and Economic Consequences

Both financial and medical impact on the roughly thirty-three million people residing in the Delhi area is significant, according to numerous investigations.

The contaminated air causes elevated rates of neurological, heart and circulatory and respiratory conditions, and can even lead to oncological diseases.

The pollution is estimated to be responsible for ten thousand premature deaths per year in the capital.