With Pollution Levels Up to 16 Times Above WHO Limit, New Delhi Faces Toxic Smog Intensified by Diwali Fireworks and Considers Inducing Artificial Rain to Try to Clear the Air
The capital of India, New Delhi, woke up on Monday (20) enveloped in a thick toxic fog, with air pollution levels more than 16 times above the maximum recommended by the World Health Organization (WHO). The city, with over 30 million residents, frequently ranks among the most polluted in the world, especially during winter.
The cold air traps pollutants close to the ground, creating a dangerous combination of emissions from burning fires, factories, and heavy traffic.
This mix becomes even more lethal as it prevents the dispersion of particles in the air.
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Diwali Fireworks Worsen the Situation
Pollution has also increased due to fireworks used in the celebrations of the Hindu festival of Diwali, which spans several days and culminates on Monday.
The Supreme Court of India had recently relaxed the ban on these items, permitting only the so-called “green fireworks,” which are considered less polluting.
Nevertheless, PM2.5 levels – cancer-causing microparticles that penetrate the bloodstream – reached 248 micrograms per cubic meter in some neighborhoods, according to data from the monitoring organization IQAir.
Authorities Consider Cloud Seeding
The Government Commission on Air Quality Management has warned that conditions are expected to worsen in the coming days.
Therefore, local authorities are studying the possibility of conducting “cloud seeding,” a technique that uses planes to inject salt or chemicals into clouds, inducing artificial rain.
A study published in the journal The Lancet Planetary Health indicated that 3.8 million deaths in India between 2009 and 2019 were caused by air pollution.

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