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On Tuesday morning inhabitants of this heavily contaminated metropolis found themselves inhaling severely hazardous air that registered in the "alarming" category.

Extremely High Air Quality Measurements

Several parts of Delhi registered an AQI over 500, which represents a tenfold increase over the healthy level set by the WHO.

In some locations, concentrations of dangerous airborne particles soared to of eighteen hundred, equating to fifteen to twenty times above healthy limits.

Pyrotechnics Prohibition and Recent Policy Shifts

Beginning in 2020, officials had maintained a comprehensive restriction on the distribution and bursting of firecrackers during Diwali due to their substantial impact to the dangerous haze that covers the capital as winter approaches.

Yet recently, the newly elected local government approached the supreme court to request a easing of the ban.

The suggestion was allowing "green crackers" – which have been doubted by conservation groups as being only approximately one-third less polluting – as a compromise between "tradition and public health".

Court Ruling and Implementation

Despite concerns of public health and environmental activists, judges agreed to the proposal, stipulating that green firecrackers could be used during limited time windows throughout the celebrations.

During the celebrations, there was considerable violation of the regulated periods across the city, with minimal regulation regarding whether the pyrotechnics being used were actually the eco-friendly type.

Numerous recording stations throughout Delhi recorded pollution spiking around the night hours to the most severe measurements recorded during celebrations in at least recent memory.

Regional Consequences

The proliferation of fireworks during the celebrations also sparked a controversy with bordering Pakistan, with authorities in Pakistani Punjab province partly blaming declining atmospheric conditions in Lahore on contaminants originating in India following the festivities.

Persistent Pollution Crisis

Extremely elevated concentrations of pollution in Delhi have continued as a serious issue for fifteen-plus years, with the situation gradually deteriorating.

Near Diwali, the amount of dangerous airborne contaminants in the atmosphere has been documented to spike to 70% higher the peak levels ever recorded in Beijing, which was previously considered as the planet's dirtiest city.

Multiple Pollution Factors

The problem in the city is attributed to a combination of various sources including automobile exhaust, dust, development work, rubbish burning and smoke from farm burning in neighbouring regions of neighboring agricultural zones.

Within these states, agricultural workers regularly burn crop residue to expedite field preparation, producing dangerous haze that then gets trapped over the metropolitan area as colder air sets in.

Health and Economic Impact

Both financial and medical consequences on the nearly 33 million people calling home the metropolitan zone is significant, according to multiple investigations.

This pollution causes increased incidence of nervous system, heart and circulatory and breathing disorders, and can even lead to oncological diseases.

Environmental contamination is calculated to be responsible for 10,000 early mortalities each year in Delhi.