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Tuesday brought inhabitants of the world's most polluted city encountered breathing extremely polluted air that registered in the "alarming" range.

Record-Breaking Pollution Measurements

Various sections of Delhi showed an AQI exceeding 500, which equals a tenfold increase over the safe threshold set by the World Health Organization.

Certain monitoring stations, readings of PM2.5 and PM10 hit highs of 1800, representing 15-20x exceeding safe limits.

Fireworks Ban and Recent Developments

Since 2020, authorities had enforced a comprehensive restriction on the sale and use of pyrotechnics during the Festival of Lights due to their substantial impact to the deadly smog that covers the city as colder weather sets in.

Yet in recent months, the newly elected local leadership approached the supreme court to seek a easing of the restrictions.

They proposed allowing "green crackers" – which have been criticized by conservation groups as being only roughly 30 percent reduced emissions – as a balance between "cultural practices and ecological concerns".

Judicial Ruling and Enforcement

To the disappointment of public health and environmental advocates, the court agreed to the appeal, specifying that eco-friendly pyrotechnics could be ignited during limited periods throughout the festival.

On Monday night, there was extensive disregard of the regulated periods across the metropolis, with little enforcement regarding whether the firecrackers being used were actually the eco-friendly version.

Several recording stations throughout Delhi showed air quality reaching highest levels around the night hours to extremely hazardous levels observed during the festival in at least three years.

Regional Effects

The widespread use of fireworks during the celebrations also sparked a blame game with neighbouring Pakistan, with officials in Pakistani Punjab province partially attributing worsening atmospheric conditions in the city of Lahore on contaminants traveling from neighboring India following the events.

Chronic Environmental Crisis

Alarmingly severe readings of atmospheric toxins in the capital have persisted as a serious issue for over a decade and a half, with the situation gradually deteriorating.

During Diwali, the amount of hazardous particles in the air has been observed to shoot up to seventy percent above the most severe readings ever recorded in Beijing, which was previously considered as the globally most contaminated city.

Diverse Contamination Contributors

The situation in the capital is resulting from a combination of multiple factors including heavy vehicle emissions, dust, building projects, garbage fires and smoke from farm burning in neighbouring regions of neighboring agricultural zones.

In these regions, farmers illegally burn crop residue to prepare for next season, producing dangerous haze that then gets trapped over the metropolitan area as cooler air descends.

Health and Economic Consequences

The economic and health consequences on the approximately 33 million people calling home the metropolitan zone is substantial, according to multiple investigations.

The contaminated air causes increased incidence of nervous system, heart and circulatory and respiratory diseases, and can potentially cause malignancies.

Air quality crisis is projected to be accounting for ten thousand early fatalities annually in Delhi.