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On Tuesday morning citizens of the planet's dirtiest urban center were faced with inhaling dangerously toxic air that fell into the "critical" level.

Extremely High Air Quality Readings

Multiple areas of the capital registered an pollution measurement exceeding 500, which equals 10x the recommended limit established by the World Health Organization.

Particular areas, levels of toxic particulate matter reached peaks of 1,800, equating to 15 to 20 times higher than acceptable levels.

Fireworks Prohibition and Recent Changes

For the past four years, officials had implemented a comprehensive restriction on the sale and use of pyrotechnics during the Festival of Lights due to their substantial impact to the hazardous haze that blankets the city as colder weather begins.

Nevertheless in recent months, the recently formed local leadership approached the highest court to propose a easing of the ban.

They proposed allowing "green crackers" – previously criticized by environmentalists as being only about 30% reduced emissions – as a middle ground between "heritage and environment".

Legal Decision and Enforcement

To the disappointment of public health and environmental advocates, judicial authorities agreed to the proposal, stipulating that green firecrackers could be used during limited periods throughout the festival.

During the celebrations, there was extensive violation of the time restrictions across the city, with little monitoring regarding whether the pyrotechnics being used were actually the more environmentally friendly version.

Numerous monitoring devices throughout the city recorded contamination spiking around late evening to some of the worst readings observed during celebrations in at least the past three years.

Cross-Border Implications

Extensive ignition of pyrotechnics during the celebrations also initiated a dispute with adjacent the neighboring country, with representatives in Pakistan's Punjab pointing to declining atmospheric conditions in the city of Lahore on hazardous particles traveling from India following the events.

Persistent Pollution Crisis

Alarmingly severe concentrations of pollution in the capital have remained as a major problem for more than 15 years, with the condition gradually deteriorating.

Near celebratory seasons, the amount of toxic particulate matter in the environment has been observed to spike to 70% higher the peak records ever documented in the Chinese city, which was previously regarded as the world's most polluted metropolis.

Various Pollution Sources

The problem in Delhi is attributed to a convergence of different contributors including transportation pollution, airborne particles, construction activities, rubbish burning and haze from crop residue ignition in neighbouring regions of neighboring agricultural zones.

Within these states, farmers regularly set their fields on fire to prepare for next season, creating hazardous smog that then gets trapped over the metropolitan area as colder air descends.

Medical and Economic Consequences

Both financial and medical consequences on the roughly thirty-three million people residing in the metropolitan zone is enormous, according to multiple research.

This pollution leads to high levels of nervous system, heart and circulatory and respiratory disorders, and can result in malignancies.

The pollution is estimated to be causing ten thousand premature deaths each year in the city.