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Delhi Tops List of World’s Most Polluted Capital for Second Consecutive Year

New Delhi has been ranked the world’s most polluted capital metropolis for a second consecutive yr adopted by Dhaka (Bangladesh), N’Djamena (Chad), Dushanbe (Tajikistan) and Muscat (Oman). Of the 15 most polluted cities in Central and South Asia in 2021, 12 had been in India. New Delhi noticed a 14.6 per cent improve in PM2.5 focus in 2021, 96.4 Ig/m3, up from 84 Ig/m3 in 2020.

The annual PM2.5 focus averages in 48 per cent of India’s cities, exceeded 50 Ig/m3 or greater than 10 occasions the World Health Organization’s (WHO) air high quality tips. Crop burning is frequent in India, particularly within the rice farms close to Delhi throughout the winter months. During crop burning season, smoke is accountable for as much as 45 per cent of air pollution within the metropolis.


These startling information got here to mild on Tuesday within the 2021 World Air Quality Report based on which solely three per cent of cities and no single nation has met the most recent WHO PM2.5 annual air high quality tips. The report analyses PM2.5 air air pollution measurements from air monitoring stations in 6,475 cities in 117 nations, areas and territories.

IQAir’s 2021 World Air Quality Report is the primary main international air high quality report primarily based on up to date annual WHO air high quality tips for PM2.5. The new tips had been launched in September 2021 and minimize present annual PM2.5 guideline values from 10 Aug/m Three to five Aug/m 3.

Fine particle air pollution, referred to as PM2.5, is often accepted to be probably the most dangerous, widely-monitored air pollutant and has been discovered to be a significant contributing issue to well being results equivalent to bronchial asthma, stroke, coronary heart and lung illnesses.

PM2.5 results in hundreds of thousands of untimely deaths yearly. The key findings embrace no nation met the most recent WHO air high quality tips for PM2.5 in 2021. Only the territories of New Caledonia, US Virgin Islands and Puerto Rico met the up to date WHO PM2.5 air high quality tips. Only 222 out of 6,475 international cities within the report met the up to date WHO PM2.5 tips.

At least 93 cities within the report had annual PM2.5 concentrations exceeding 10 occasions the WHO PM2.5 tips. Of 174 Latin America and the Caribbean cities, solely 12 (seven per cent) have met the WHO PM2.5 tips.

Of 1,887 Asian cities, solely 4 (0.2 per cent) have met the up to date WHO PM2.5 tips.

Of the 1,588 cities in Europe, solely 55 (three per cent) have met the WHO PM2.5 tips.

The report coated 2,406 cities within the US and located that a mean PM2.5 concentrations rose from 9.6 Aug/m Three to 10.3 Aug/m Three in 2021 in comparison with 2020.

“It is a surprising incontrovertible fact that no main metropolis or nation is offering secure and wholesome air to their residents based on the most recent WHO air high quality tips. “This report underscores simply how a lot work stays to be completed to make sure that everybody has secure, clear and wholesome air to breathe. The time for motion is now,” stated Frank Hammes, CEO of IQAir.

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