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As Tuesday dawned residents of the world's most polluted city found themselves breathing dangerously toxic air that fell into the "critical" range.

Record-Breaking Pollution Readings

Several parts of the city recorded an AQI above 500, which represents 10x the safe limit established by the global health authority.

In some locations, readings of PM2.5 and PM10 hit highs of eighteen hundred, representing 15-20x exceeding safe standards.

Fireworks Prohibition and Recent Changes

Since 2020, the government had enforced a complete ban on the distribution and bursting of firecrackers during the Festival of Lights due to their substantial impact to the dangerous smog that blankets the city as the cold season approaches.

Nevertheless in recent months, the current local administration approached the judicial authority to request a easing of the restrictions.

They proposed allowing "eco-friendly fireworks" – previously doubted by conservation groups as being only approximately one-third less polluting – as a compromise between "cultural practices and environment".

Legal Ruling and Enforcement

To the disappointment of environmental and health campaigners, judicial authorities approved the appeal, stipulating that environmentally conscious fireworks could be set off during limited time windows throughout the Diwali.

Throughout the festival evening, there was extensive violation of the time restrictions across the capital, with little regulation regarding whether the pyrotechnics being used were actually the supposedly greener type.

Many air quality sensors throughout the capital recorded air quality reaching highest levels around the night hours to the most severe readings recorded during celebrations in at least the past three years.

Regional Effects

The proliferation of fireworks during the festival also sparked a controversy with neighbouring the neighboring country, with officials in Pakistani Punjab pointing to declining atmospheric conditions in Lahore on pollutants originating in neighboring India following the celebrations.

Long-Standing Environmental Issue

Alarmingly severe readings of pollution in the city have continued as a major challenge for over a decade and a half, with the condition showing no improvement.

Around Diwali, the concentration of toxic airborne contaminants in the environment has been found to shoot up to significantly exceeding the most severe readings ever documented in the Chinese city, which was previously viewed as the planet's dirtiest city.

Multiple Pollution Contributors

The problem in the capital is caused by a convergence of multiple factors including heavy vehicle emissions, construction debris, development work, rubbish burning and smoke from agricultural fires in neighbouring regions of neighboring agricultural zones.

In these regions, farmers regularly burn crop residue to clear them quickly, producing hazardous haze that becomes contained over the metropolitan area as colder air arrives.

Public Health and Economic Consequences

Public health and economic impact on the roughly thirty-three million residents residing in the capital region is significant, according to numerous research.

The contaminated air causes increased incidence of nervous system, heart and circulatory and respiratory conditions, and can result in malignancies.

Environmental contamination is projected to be causing 10,000 premature fatalities each year in the capital.