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On Tuesday morning inhabitants of the planet's dirtiest urban center found themselves breathing dangerously toxic air that fell into the "critical" category.

Record-Breaking Pollution Levels

Multiple areas of the city recorded an air quality index exceeding 500, which equals 10x the safe limit established by the global health authority.

Particular areas, concentrations of toxic particulate matter soared to of 1800, representing 15-20x higher than healthy standards.

Firecracker Restrictions and Current Developments

For the past four years, officials had maintained a total prohibition on the distribution and bursting of firecrackers during Diwali due to their significant contribution to the dangerous smog that engulfs the capital as winter sets in.

Yet in recent months, the current regional leadership approached the judicial authority to seek a easing of the restrictions.

Officials advocated for allowing "green crackers" – previously questioned by environmental experts as being only approximately one-third reduced emissions – as a middle ground between "cultural practices and environment".

Court Verdict and Reality

Despite concerns of public health and environmental activists, judges complied with the appeal, mandating that eco-friendly pyrotechnics could be ignited during designated time windows throughout the festival.

On Monday night, there was considerable violation of the regulated periods across the capital, with minimal monitoring regarding whether the pyrotechnics being used were actually the eco-friendly version.

Many air quality sensors throughout the city registered air quality reaching highest levels around the night hours to the most severe measurements recorded during Diwali in at least three years.

Cross-Border Effects

Extensive ignition of fireworks during the celebrations also triggered a controversy with neighbouring Pakistan, with representatives in Pakistani Punjab province partly blaming worsening pollution levels in their urban centers on hazardous particles traveling from neighboring India following the festivities.

Long-Standing Environmental Issue

The dangerously high readings of air contamination in the capital have persisted as a major issue for more than 15 years, with the condition showing no improvement.

During Diwali, the amount of toxic particulate matter in the air has been documented to increase dramatically to significantly exceeding the most severe readings ever recorded in the Chinese city, which was once regarded as the world's most polluted urban center.

Various Pollution Contributors

The problem in Delhi is resulting from a combination of multiple factors including heavy vehicle emissions, construction debris, development work, waste incineration and smoke from crop residue ignition in nearby regions of farming communities.

In these regions, rural residents regularly set their fields on fire to clear them quickly, creating toxic smog that remains stagnant over the capital as winter air sets in.

Health and Financial Impact

Public health and economic consequences on the approximately 33 million residents calling home the capital region is significant, according to multiple research.

This pollution causes elevated rates of neurological, cardiovascular and respiratory diseases, and can result in malignancies.

Air quality crisis is estimated to be causing 10,000 early deaths annually in the capital.