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On Tuesday morning citizens of this heavily contaminated metropolis encountered breathing severely hazardous air that registered in the "critical" level.

Alarming Pollution Readings

Several parts of the city recorded an air quality index exceeding 500, which translates to 10x the safe limit recommended by the WHO.

Certain monitoring stations, readings of PM2.5 and PM10 hit highs of 1800, equating to 15-20x above acceptable limits.

Pyrotechnics Restrictions and New Policy Shifts

Beginning in 2020, authorities had enforced a comprehensive restriction on the purchase and ignition of firecrackers during Diwali due to their major role to the hazardous haze that engulfs the capital as colder weather approaches.

However earlier this year, the current city leadership appealed to the supreme court to request a relaxation of the ban.

They proposed allowing "eco-friendly fireworks" – historically criticized by environmental experts as being only approximately one-third lower impact – as a middle ground between "heritage and ecological concerns".

Legal Verdict and Enforcement

Despite concerns of public health and environmental activists, the court complied with the proposal, specifying that green firecrackers could be set off during limited time windows throughout the celebrations.

During the celebrations, there was considerable disregard of the time restrictions across the capital, with minimal enforcement regarding whether the fireworks being used were actually the more environmentally friendly variety.

Many recording stations throughout the city showed contamination reaching highest levels around the night hours to some of the worst levels recorded during celebrations in at least recent memory.

International Consequences

Extensive ignition of fireworks during the celebrations also initiated a blame game with neighbouring Pakistan, with authorities in Pakistani the Punjab region partly blaming declining pollution levels in Lahore on pollutants coming from neighboring India following the events.

Long-Standing Environmental Issue

Extremely elevated concentrations of air contamination in the capital have remained as a major problem for fifteen-plus years, with the situation showing no improvement.

Around Diwali, the amount of hazardous particles in the atmosphere has been observed to shoot up to seventy percent above the peak levels ever measured in China's capital, which was formerly viewed as the world's most polluted metropolis.

Multiple Contamination Contributors

The problem in the city is attributed to a combination of multiple factors including heavy vehicle emissions, airborne particles, construction activities, waste incineration and smoke from crop residue ignition in neighbouring areas of neighboring agricultural zones.

Throughout these areas, rural residents routinely burn crop residue to clear them quickly, generating toxic haze that then gets trapped over the capital as winter air arrives.

Medical and Financial Consequences

The economic and health impact on the nearly 33 million inhabitants living in the metropolitan zone is enormous, according to various research.

The contaminated air causes high levels of nervous system, heart and circulatory and respiratory conditions, and can even lead to malignancies.

Environmental contamination is projected to be accounting for ten thousand untimely deaths per year in the capital.