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Ho chi minh city global polution ranking8/28/2023 ![]() ![]() Vehicles are the main source of nitrogen dioxide pollution, and older vehicles produce far more than more modern models. We use Google reCaptcha to protect our website and the Google Privacy Policy and Terms of Service apply. For more information see our Privacy Policy. Privacy Notice: Newsletters may contain info about charities, online ads, and content funded by outside parties. It shows that there is hope, things can go in the right direction, though this is a long-term trip.” Robert O’Keefe, the vice-president of the Health Effects Institute, said: “China has continued to make progress this decade on air pollution. South Asia and Africa dominated the Top 10, with Dhaka, Karachi and Jakarta, Lago and Accra also on the list, while Beijing was ninth worst globally. The worst cities for particulate pollution – which can come from coal-fired power stations, the burning of waste and agricultural burning, as well as from vehicles – were Delhi and Kolkata in India, followed by Kano in Nigeria and Lima in Peru. ![]() They found that while poorer countries tended to be plagued by pollution from particulates – very fine pieces of unburnt carbon or debris, mostly from burning or industrial sources – the problem of NO 2 pollution was less well studied. Scientists from the Health Effects Institute in the US used satellite data, along with on-the-ground read-outs, to compile a global picture of fine particulate (PM2.5) and NO 2 air pollution in more than 7,000 cities globally, for the State of the Global Air report. While the problem of particulate pollution – caused by very fine pieces of soot or debris, mostly from burning and some industrial sources – has been an increasing cause of concern around the world, the problem of nitrogen dioxide (NO 2) pollution has been less well studied, with limited on-the-ground monitoring stations capable of detecting the gas. ![]()
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