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As Tuesday dawned citizens of the world's most polluted city encountered inhaling severely hazardous air that registered in the "alarming" range.

Extremely High Air Quality Readings

Multiple areas of the capital registered an AQI exceeding 500, which represents 10x the recommended limit established by the global health authority.

In some locations, concentrations of toxic particulate matter reached peaks of 1,800, amounting to fifteen to twenty times higher than acceptable limits.

Firecracker Ban and Current Policy Shifts

Since 2020, officials had enforced a total prohibition on the sale and use of firecrackers during the Festival of Lights due to their substantial impact to the deadly smog that blankets the capital as colder weather sets in.

Yet recently, the newly elected regional government approached the supreme court to seek a easing of the restrictions.

Officials advocated for allowing "eco-friendly fireworks" – which have been criticized by environmentalists as being only about 30% less polluting – as a balance between "heritage and ecological concerns".

Judicial Ruling and Implementation

Despite concerns of public health and environmental activists, judges approved the appeal, specifying that environmentally conscious fireworks could be set off during designated hours throughout the celebrations.

Throughout the festival evening, there was considerable flouting of the designated hours across the city, with little monitoring regarding whether the pyrotechnics being used were actually the supposedly greener variety.

Many monitoring devices throughout the city registered air quality peaking around midnight to extremely hazardous measurements observed during celebrations in at least the past three years.

Regional Consequences

The widespread use of firecrackers during the celebrations also initiated a dispute with neighbouring Pakistan, with authorities in Pakistan's Punjab province partly blaming worsening air quality in their urban centers on hazardous particles coming from neighboring India following the festivities.

Persistent Pollution Problem

The dangerously high concentrations of pollution in Delhi have persisted as a serious problem for more than 15 years, with the condition gradually deteriorating.

Around celebratory seasons, the levels of hazardous particles in the environment has been found to spike to 70% higher the peak levels ever recorded in China's capital, which was formerly regarded as the planet's dirtiest urban center.

Diverse Pollution Sources

The problem in the capital is attributed to a combination of different contributors including automobile exhaust, construction debris, construction activities, rubbish burning and smoke from crop residue ignition in nearby states of Punjab and Haryana.

In these regions, rural residents regularly set their fields on fire to prepare for next season, generating dangerous haze that remains stagnant over the city as colder air descends.

Medical and Financial Toll

Public health and economic toll on the approximately 33 million residents living in the metropolitan zone is significant, according to multiple research.

This pollution leads to high levels of neurological, cardiovascular and lung conditions, and can even lead to malignancies.

Environmental contamination is projected to be causing ten thousand untimely fatalities per year in the capital.