Here is the list of 10 most polluted cities in the world, Delhi, Kolkata, Mumbai among top 20

The report ‘Air Quality and Health in Cities’ published by the State of Global Air Initiative is a collaboration between

Updated on Aug 18, 2022 03:57 PM IST 10 Photos

According to the latest State of Global Air report on air quality and health in cities, New Delhi and Kolkata are among the top 10 most polluted cities in the world in terms of average annual population-weighted PM 2.5 exposure. New Delhi and Kolkata ranked first and second in the list while Mumbai has been placed at 14th spot.(HT Photo/Raj K Raj)

Delhi, India (110): In 2019, Delhi recorded an annual average PM2.5 concentration of 110 micrograms per cubic metre, the highest among the most populous cities in the world. (AP)

Kolkata, India (84): Kolkata, West Bengal recorded an annual average PM2.5 concentration of 110 micrograms per cubic metre, said the report "Air Quality and Health in Cities" by the State of Global Air Initiative, a collaboration between the Health Effects Institute and the Institute for Health Metrics and Evaluation's Global Burden of Disease project.(Representative Image)

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Kano, Nigeria (83.6): Kano, Nigeria recorded an annual average PM2.5 concentration of 83.6 micrograms per cubic metre. Residents in cities from India, Nigeria, Peru, and Bangladesh are exposed to PM 2.5 levels that are several-fold higher than the global averages, the report said. “As cities around the world rapidly grow, the impacts of air pollution on residents’ health are also expected to increase, underscoring the importance of early interventions to reduce exposures and protect public health,” said Pallavi Pant, a Senior Scientist at HEI, involved in the study.(Getty Images)

Lima, Peru (73.2): Lima, Peru recorded an annual average PM2.5 concentration of 83.6 micrograms per cubic metre. Referring to the WHO’s Air Quality Database, the report said only 117 nations currently have ground-level monitoring systems to track PM2.5, and only 74 nations are monitoring NO2 levels. “Strategic investments in ground-level air quality monitoring systems and expanded use of satellites and other emerging technologies in targeted regions can provide critical first steps toward cleaner air,” it said.(REUTERS)

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