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On Tuesday morning inhabitants of the world's most polluted city were faced with inhaling severely hazardous air that fell into the "critical" level.

Alarming Pollution Measurements

Several parts of Delhi registered an air quality index above 500, which translates to a tenfold increase over the recommended level established by the global health authority.

Particular areas, concentrations of PM2.5 and PM10 reached peaks of 1800, amounting to 15-20x higher than safe standards.

Fireworks Restrictions and Recent Developments

Since 2020, officials had maintained a total prohibition on the distribution and bursting of pyrotechnics during Diwali due to their substantial impact to the deadly smog that covers the metropolis as winter sets in.

However in recent months, the newly elected regional government petitioned the supreme court to propose a modification of the prohibition.

The suggestion was allowing "environmentally conscious pyrotechnics" – historically questioned by conservation groups as being only about 30% less polluting – as a compromise between "tradition and ecological concerns".

Court Verdict and Enforcement

To the disappointment of medical and ecological activists, the court approved the request, specifying that environmentally conscious fireworks could be used during specific periods throughout the festival.

During the celebrations, there was extensive flouting of the designated hours across the capital, with little monitoring regarding whether the firecrackers being used were actually the supposedly greener variety.

Several recording stations throughout Delhi registered air quality spiking around the night hours to some of the worst levels seen during Diwali in at least the past three years.

Regional Implications

Extensive ignition of pyrotechnics during the celebrations also initiated a blame game with adjacent the neighboring country, with officials in Pakistan's the Punjab region partly blaming deteriorating air quality in Lahore on pollutants traveling from India following the celebrations.

Persistent Pollution Problem

Alarmingly severe concentrations of pollution in the city have remained as a significant issue for over a decade and a half, with the condition showing no improvement.

During Diwali, the concentration of dangerous airborne contaminants in the environment has been documented to spike to 70% higher the peak records ever documented in Beijing, which was once considered as the world's most polluted city.

Various Pollution Sources

The problem in Delhi is resulting from a combination of different contributors including automobile exhaust, construction debris, building projects, rubbish burning and haze from farm burning in nearby states of farming communities.

Throughout these areas, farmers illegally ignite agricultural waste to expedite field preparation, creating dangerous haze that becomes contained over the city as colder air arrives.

Health and Financial Toll

The economic and health impact on the approximately 33 million residents calling home the metropolitan zone is significant, according to multiple research.

These hazardous conditions results in elevated rates of neurological, heart and circulatory and breathing disorders, and can potentially cause oncological diseases.

Air quality crisis is estimated to be causing 10,000 untimely deaths each year in the city.