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As Tuesday dawned inhabitants of this heavily contaminated metropolis found themselves breathing extremely polluted air that was classified as the "alarming" range.

Record-Breaking Air Quality Readings

Various sections of the capital registered an air quality index over 500, which translates to ten times the healthy limit set by the global health authority.

Certain monitoring stations, levels of PM2.5 and PM10 reached peaks of 1,800, representing 15-20x exceeding healthy levels.

Fireworks Prohibition and Recent Developments

Beginning in 2020, officials had maintained a total prohibition on the distribution and bursting of firecrackers during Diwali due to their substantial impact to the hazardous smog that covers the metropolis as winter approaches.

Yet earlier this year, the newly elected local leadership appealed to the highest court to request a modification of the prohibition.

They proposed allowing "environmentally conscious pyrotechnics" – historically criticized by environmentalists as being only approximately one-third lower impact – as a compromise between "cultural practices and public health".

Court Decision and Implementation

Despite concerns of medical and ecological advocates, the court complied with the proposal, mandating that environmentally conscious fireworks could be ignited during specific periods throughout the festival.

Throughout the festival evening, there was considerable flouting of the time restrictions across the city, with minimal enforcement regarding whether the firecrackers being used were actually the supposedly greener version.

Numerous recording stations throughout the capital recorded contamination reaching highest levels around the night hours to extremely hazardous readings recorded during Diwali in at least the past three years.

Cross-Border Implications

The proliferation of fireworks during Diwali also sparked a blame game with bordering Pakistan, with representatives in Pakistani the Punjab region partly blaming deteriorating air quality in Lahore on contaminants traveling from neighboring India following the celebrations.

Persistent Pollution Issue

The dangerously high levels of air contamination in Delhi have persisted as a significant problem for fifteen-plus years, with the problem gradually deteriorating.

Near Diwali, the amount of toxic airborne contaminants in the environment has been found to shoot up to seventy percent above the worst records ever measured in Beijing, which was once viewed as the globally most contaminated city.

Various Pollution Contributors

This crisis in the city is resulting from a combination of multiple factors including heavy vehicle emissions, airborne particles, development work, rubbish burning and pollutants from crop residue ignition in neighbouring regions of Punjab and Haryana.

Within these states, agricultural workers illegally burn crop residue to clear them quickly, producing dangerous pollution that remains stagnant over the city as cooler air descends.

Health and Financial Toll

Public health and economic toll on the approximately 33 million inhabitants residing in the metropolitan zone is enormous, according to various studies.

The contaminated air leads to high levels of nervous system, heart and circulatory and breathing diseases, and can result in malignancies.

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