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On Tuesday morning residents of this heavily contaminated metropolis were faced with exposed to extremely polluted air that registered in the "critical" category.

Alarming Pollution Readings

Various sections of Delhi showed an air quality index exceeding 500, which represents 10x the healthy level recommended by the WHO.

Particular areas, readings of PM2.5 and PM10 hit highs of eighteen hundred, representing fifteen to twenty times higher than safe levels.

Fireworks Restrictions and Current Policy Shifts

Beginning in 2020, authorities had enforced a comprehensive restriction on the distribution and bursting of fireworks during the Festival of Lights due to their substantial impact to the deadly pollution that engulfs the metropolis as colder weather approaches.

However earlier this year, the current city administration appealed to the highest court to request a easing of the prohibition.

The suggestion was allowing "green crackers" – which have been questioned by environmental experts as being only approximately one-third reduced emissions – as a balance between "tradition and ecological concerns".

Legal Decision and Implementation

Much to the frustration of medical and ecological activists, the court complied with the request, specifying that green firecrackers could be ignited during designated time windows throughout the Diwali.

On Monday night, there was widespread disregard of the time restrictions across the metropolis, with minimal enforcement regarding whether the pyrotechnics being used were actually the supposedly greener variety.

Many monitoring devices throughout the capital registered pollution peaking around midnight to the most severe measurements seen during Diwali in at least the past three years.

Regional Implications

Extensive ignition of fireworks during the festival also initiated a blame game with neighbouring Pakistan, with authorities in Pakistan's the Punjab region pointing to declining air quality in their urban centers on contaminants originating in neighboring India following the festivities.

Long-Standing Pollution Issue

Alarmingly severe concentrations of pollution in the capital have persisted as a major challenge for more than 15 years, with the problem showing no improvement.

During the festival period, the amount of toxic particulate matter in the atmosphere has been documented to shoot up to seventy percent above the worst levels ever recorded in the Chinese city, which was previously regarded as the globally most contaminated city.

Multiple Pollution Factors

This crisis in the city is caused by a mix of various sources including automobile exhaust, dust, development work, rubbish burning and pollutants from farm burning in nearby states of neighboring agricultural zones.

Within these states, farmers illegally burn crop residue to expedite field preparation, producing toxic smog that remains stagnant over the capital as winter air arrives.

Medical and Economic Impact

Both financial and medical impact on the nearly 33 million inhabitants residing in the Delhi area is enormous, according to various investigations.

These hazardous conditions causes elevated rates of nervous system, heart and circulatory and lung conditions, and can potentially cause malignancies.

The pollution is calculated to be causing approximately 10k premature mortalities annually in the capital.