Not a single country managed to meet the World Health Organization's (WHO) air quality standard in 2021, a survey of pollution data in 6,475 cities showed on Tuesday, and smog even rebounded in some regions after a COVID-related dip.
The WHO recommends that average annual readings of small and hazardous airborne particles known as PM2.5 should be no more than 5 micrograms per cubic metre after changing its guidelines last year, saying that even low concentrations caused significant health risks.complied by IQAir, a Swiss pollution technology company that monitors air quality. As many as 93 cities saw PM2.5 levels at 10 times the recommended level.
India's overall pollution levels worsened in 2021 and New Delhi remained the world's most polluted capital, the data showed. Bangladesh was the most polluted country, also unchanged from the previous year, while Chad ranked second after the African country's data was included for the first time. China, which has been waging war on pollution since 2014, fell to 22nd in the PM2.5 rankings in 2021, down from 14th place a year earlier, with average readings improving slightly over the year to 32.6 micrograms, IQAir said.
Hotan in the northwestern region of Xinjiang was China's worst performing city, with average PM2.5 readings of more than 100 micrograms, largely caused by sandstorms. It fell to third on the list of the world's most polluted cities after being overtaken by Bhiwadi and Ghaziabad, both in India.Reporting by David Stanway; Editing by Christian Schmollinger
Deutschland Neuesten Nachrichten, Deutschland Schlagzeilen
Similar News:Sie können auch ähnliche Nachrichten wie diese lesen, die wir aus anderen Nachrichtenquellen gesammelt haben.
Global Oil Giant Saudi Aramco Says Annual Profit Doubled in 2021Aramco, also known as the Saudi Arabian Oil Co., announced Sunday its net profit doubled last year as global growth recovered from the coronavirus downturn.
Weiterlesen »
Why you shouldn't wait until April 30 to file your 2021 taxesGet them prepared early and with the guidance of professionals
Weiterlesen »
Body found on Cleveland apartment balcony Thursday confirmed as Warrensville Heights woman missing since July 202119 News has learned the body found Thursday on a Cleveland apartment balcony was identified as Audreona Barnes. The 19-year-old went missing in July 2021. May she rest in peace. 🕊♥
Weiterlesen »
Aramco fuels Saudi index as 2021 profit soarsSaudi Arabian stocks ended higher on Sunday after full-year profit from state oil producer Saudi Aramco more than doubled to beat forecasts while other Gulf markets were mixed.
Weiterlesen »
Returning hatchery salmon accounted for one-third of Alaska commercial catch in 2021Fish Factor: 2021 saw the eighth largest Alaska hatchery homecoming since 1977 and, at a payout of $142 million, the salmon produced 25% of the overall value at the docks.
Weiterlesen »
Saudi Aramco doubles its net profit in 2021, to $110 billionState oil giant Saudi Aramco said Sunday its 2021 net profit more than doubled to $110 billion, a boon to the Middle East’s largest economy as it seeks to...
Weiterlesen »