The megacity Wakes Up to Dangerous Smog Post Diwali

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

Alarming Air Quality Levels

Various sections of the city registered an AQI over 500, which equals a tenfold increase over the recommended level established by the global health authority.

Certain monitoring stations, readings of PM2.5 and PM10 reached peaks of eighteen hundred, representing 15-20x exceeding safe limits.

Pyrotechnics Prohibition and Recent Changes

Beginning in 2020, authorities had implemented a total prohibition on the purchase and ignition of pyrotechnics during celebrations due to their major role to the dangerous haze that blankets the metropolis as winter sets in.

Nevertheless earlier this year, the recently formed local leadership petitioned the highest court to request a easing of the prohibition.

Officials advocated for allowing "eco-friendly fireworks" – previously doubted by environmental experts as being only about 30% reduced emissions – as a balance between "tradition and environment".

Court Ruling and Enforcement

Despite concerns of public health and environmental campaigners, judges approved the request, stipulating that environmentally conscious fireworks could be used during designated time windows throughout the Diwali.

During the celebrations, there was widespread disregard of the designated hours across the capital, with minimal monitoring regarding whether the pyrotechnics being used were actually the eco-friendly variety.

Several recording stations throughout Delhi recorded contamination peaking around midnight to the most severe levels recorded during the festival in at least the past three years.

Regional Consequences

Extensive ignition of pyrotechnics during the festival also sparked a controversy with bordering the neighboring country, with officials in Pakistani Punjab province partially attributing declining pollution levels in their urban centers on pollutants traveling from neighboring India following the celebrations.

Persistent Environmental Problem

The dangerously high levels of air contamination in the capital have persisted as a significant problem for over a decade and a half, with the situation continuing to worsen.

Around Diwali, the concentration of hazardous particles in the atmosphere has been observed to spike to 70% higher the peak records ever recorded in Beijing, which was previously viewed as the world's most polluted urban center.

Various Contamination Contributors

The problem in Delhi is caused by a mix of different contributors including automobile exhaust, airborne particles, construction activities, waste incineration and haze from agricultural fires in nearby states of neighboring agricultural zones.

Throughout these areas, rural residents routinely ignite agricultural waste to prepare for next season, creating toxic smog that then gets trapped over the metropolitan area as cooler air descends.

Medical and Financial Impact

Both financial and medical toll on the nearly 33 million people living in the metropolitan zone is significant, according to various studies.

This pollution results in elevated rates of neurological, cardiovascular and breathing conditions, and can result in cancer.

Environmental contamination is estimated to be causing approximately 10k premature mortalities annually in Delhi.