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On Tuesday morning inhabitants of this heavily contaminated metropolis were faced with breathing severely hazardous air that was classified as the "critical" category.

Record-Breaking Air Quality Levels

Several parts of the city showed an air quality index above 500, which equals 10x the healthy limit recommended by the World Health Organization.

Particular areas, concentrations of dangerous airborne particles reached peaks of 1800, representing 15-20x higher than safe standards.

Fireworks Ban and New Changes

Beginning in 2020, the government had maintained a comprehensive restriction on the sale and use of fireworks during the Festival of Lights due to their major role to the hazardous smog that engulfs the capital as winter approaches.

However in recent months, the current local leadership petitioned the highest court to propose a modification of the restrictions.

The suggestion was allowing "green crackers" – previously criticized by environmentalists as being only approximately one-third lower impact – as a balance between "cultural practices and ecological concerns".

Legal Verdict and Reality

Much to the frustration of public health and environmental campaigners, judges complied with the request, specifying that eco-friendly pyrotechnics could be used during specific hours throughout the Diwali.

On Monday night, there was widespread disregard of the designated hours across the capital, with minimal monitoring regarding whether the pyrotechnics being used were actually the more environmentally friendly variety.

Several monitoring devices throughout the capital showed contamination peaking around midnight to the most severe measurements recorded during celebrations in at least the past three years.

International Implications

The proliferation of firecrackers during the celebrations also triggered a dispute with neighbouring the neighboring country, with representatives in Pakistan's Punjab province partly blaming declining atmospheric conditions in the city of Lahore on pollutants originating in India following the festivities.

Long-Standing Environmental Crisis

Extremely elevated readings of air contamination in the city have continued as a serious problem for fifteen-plus years, with the condition showing no improvement.

Around Diwali, the levels of dangerous airborne contaminants in the air has been observed to shoot up to significantly exceeding the most severe levels ever measured in Beijing, which was formerly considered as the world's most polluted city.

Multiple Contamination Sources

This crisis in Delhi is attributed to a convergence of various sources including automobile exhaust, dust, development work, waste incineration and smoke from farm burning in neighbouring regions of neighboring agricultural zones.

Within these states, rural residents routinely ignite agricultural waste to clear them quickly, generating hazardous haze that then gets trapped over the capital as cooler air arrives.

Medical and Financial Toll

The economic and health consequences on the approximately 33 million residents living in the capital region is enormous, according to various research.

The contaminated air causes high levels of nervous system, cardiovascular and lung diseases, and can even lead to oncological diseases.

Air quality crisis is projected to be responsible for approximately 10k premature fatalities per year in the capital.