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Tuesday brought residents of the world's most polluted city were faced with exposed to severely hazardous air that was classified as the "alarming" range.

Alarming Pollution Readings

Multiple areas of the capital registered an AQI above 500, which represents a tenfold increase over the safe threshold established by the global health authority.

Certain monitoring stations, readings of toxic particulate matter reached peaks of 1,800, representing fifteen to twenty times exceeding acceptable levels.

Firecracker Ban and Recent Policy Shifts

Beginning in 2020, the government had implemented a total prohibition on the purchase and ignition of fireworks during the Festival of Lights due to their significant contribution to the hazardous pollution that covers the city as winter sets in.

Nevertheless recently, the newly elected city government petitioned the highest court to request a relaxation of the restrictions.

They proposed allowing "green crackers" – historically questioned by conservation groups as being only roughly 30 percent reduced emissions – as a balance between "heritage and ecological concerns".

Judicial Ruling and Implementation

Much to the frustration of environmental and health advocates, judicial authorities agreed to the request, mandating that environmentally conscious fireworks could be used during limited time windows throughout the Diwali.

During the celebrations, there was widespread violation of the regulated periods across the metropolis, with little regulation regarding whether the firecrackers being used were actually the supposedly greener version.

Several air quality sensors throughout Delhi recorded pollution reaching highest levels around midnight to some of the worst readings recorded during celebrations in at least the past three years.

International Implications

The widespread use of fireworks during Diwali also sparked a dispute with adjacent Pakistan, with representatives in Pakistani Punjab province partly blaming deteriorating atmospheric conditions in the city of Lahore on contaminants traveling from India following the events.

Persistent Pollution Problem

Extremely elevated levels of pollution in Delhi have remained as a significant issue for more than 15 years, with the problem gradually deteriorating.

During Diwali, the amount of toxic particles in the atmosphere has been observed to shoot up to significantly exceeding the most severe records ever measured in China's capital, which was formerly regarded as the world's most polluted city.

Various Pollution Sources

The situation in the city is caused by a convergence of different contributors including transportation pollution, dust, development work, rubbish burning and smoke from agricultural fires in neighbouring states of farming communities.

Within these states, farmers routinely ignite agricultural waste to clear them quickly, producing toxic pollution that remains stagnant over the city as cooler air sets in.

Public Health and Economic Consequences

The economic and health consequences on the roughly thirty-three million residents living in the metropolitan zone is substantial, according to various research.

The contaminated air results in high levels of neurological, heart and circulatory and respiratory diseases, and can even lead to oncological diseases.

The pollution is projected to be accounting for ten thousand premature fatalities annually in the city.