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As Tuesday dawned residents of the world's most polluted city were faced with breathing dangerously toxic air that was classified as the "alarming" range.

Extremely High Pollution Measurements

Multiple areas of the city registered an AQI exceeding 500, which represents 10x the recommended level recommended by the World Health Organization.

Particular areas, concentrations of toxic particulate matter hit highs of 1800, representing 15 to 20 times above safe levels.

Pyrotechnics Prohibition and Recent Developments

Beginning in 2020, authorities had implemented a total prohibition on the purchase and ignition of fireworks during the Festival of Lights due to their significant contribution to the dangerous smog that blankets the capital as winter begins.

However in recent months, the recently formed local administration appealed to the highest court to request a relaxation of the restrictions.

Officials advocated for allowing "green crackers" – historically doubted by environmental experts as being only about 30% less polluting – as a balance between "heritage and environment".

Legal Ruling and Enforcement

Despite concerns of medical and ecological activists, the court agreed to the proposal, stipulating that green firecrackers could be set off during designated hours throughout the Diwali.

Throughout the festival evening, there was widespread violation of the regulated periods across the capital, with little monitoring regarding whether the fireworks being used were actually the supposedly greener variety.

Several air quality sensors throughout the capital recorded air quality spiking around the night hours to extremely hazardous readings recorded during celebrations in at least recent memory.

Cross-Border Effects

The widespread use of fireworks during Diwali also triggered a dispute with neighbouring Pakistan, with officials in Pakistani Punjab province pointing to deteriorating atmospheric conditions in the city of Lahore on contaminants traveling from neighboring India following the festivities.

Chronic Pollution Problem

Alarmingly severe levels of pollution in the city have persisted as a significant issue for more than 15 years, with the condition gradually deteriorating.

Near Diwali, the amount of hazardous particles in the atmosphere has been observed to increase dramatically to significantly exceeding the most severe readings ever recorded in the Chinese city, which was previously considered as the planet's dirtiest metropolis.

Diverse Pollution Sources

This crisis in the capital is resulting from a convergence of multiple factors including automobile exhaust, construction debris, building projects, waste incineration and pollutants from farm burning in nearby regions of neighboring agricultural zones.

Within these states, farmers regularly set their fields on fire to clear them quickly, producing hazardous haze that remains stagnant over the city as cooler air descends.

Health and Economic Toll

Public health and economic consequences on the approximately 33 million residents living in the Delhi area is substantial, according to numerous research.

These hazardous conditions causes increased incidence of nervous system, heart and circulatory and lung diseases, and can even lead to oncological diseases.

The pollution is calculated to be responsible for 10,000 early fatalities annually in Delhi.