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On Tuesday morning residents of the world's most polluted city were faced with exposed to extremely polluted air that registered in the "severe" range.

Extremely High Pollution Levels

Multiple areas of the capital showed an AQI above 500, which represents ten times the recommended threshold recommended by the global health authority.

In some locations, levels of dangerous airborne particles hit highs of 1,800, amounting to fifteen to twenty times above acceptable limits.

Pyrotechnics Restrictions and New Developments

Beginning in 2020, authorities had maintained a comprehensive restriction on the sale and use of fireworks during celebrations due to their major role to the deadly haze that covers the capital as the cold season approaches.

However earlier this year, the recently formed city government approached the supreme court to seek a easing of the prohibition.

The suggestion was allowing "eco-friendly fireworks" – which have been doubted by conservation groups as being only approximately one-third less polluting – as a compromise between "cultural practices and environment".

Judicial Decision and Enforcement

To the disappointment of public health and environmental campaigners, the court agreed to the appeal, mandating that eco-friendly pyrotechnics could be set off during specific periods throughout the festival.

Throughout the festival evening, there was widespread violation of the designated hours across the capital, with insufficient monitoring regarding whether the pyrotechnics being used were actually the more environmentally friendly version.

Many air quality sensors throughout Delhi registered air quality spiking around midnight to the most severe measurements seen during celebrations in at least the past three years.

Regional Effects

Extensive ignition of fireworks during the festival also triggered a blame game with adjacent Pakistan, with authorities in Pakistan's the Punjab region partially attributing declining atmospheric conditions in their urban centers on contaminants traveling from India following the festivities.

Long-Standing Pollution Issue

The dangerously high levels of atmospheric toxins in the capital have remained as a major challenge for more than 15 years, with the condition gradually deteriorating.

Near the festival period, the amount of toxic particulate matter in the environment has been documented to shoot up to significantly exceeding the worst readings ever documented in Beijing, which was previously considered as the world's most polluted urban center.

Various Contamination Contributors

This crisis in the city is caused by a mix of various sources including transportation pollution, dust, construction activities, garbage fires and haze from farm burning in nearby states of Punjab and Haryana.

Throughout these areas, rural residents routinely burn crop residue to prepare for next season, generating hazardous haze that then gets trapped over the city as colder air sets in.

Public Health and Financial Toll

Public health and economic impact on the roughly thirty-three million inhabitants living in the metropolitan zone is significant, according to numerous investigations.

The contaminated air results in high levels of nervous system, heart and circulatory and breathing disorders, and can result in malignancies.

Environmental contamination is calculated to be accounting for 10,000 premature deaths annually in the capital.