Survey reveals no nation on the earth met WHO air high quality standards throughout 2021

A survey of air air pollution information in 6,475 cities reveals that not a single country met the World Health Organisation’s air quality requirements in 2021. According to a Reuters report, smog even returned to pre-pandemic levels in some regions, after a brief respite during Covid-19. The data was collated by Swiss firm, IQAir, a pollution technology company that monitors air quality.
The WHO advice is that common annual PM2.5 readings mustn’t exceed 5 micrograms per cubic metre. PM2.5 refers to particulate matter discovered within the air, corresponding to dust, soot, dirt, liquid droplets, and smoke. The WHO tips changed final 12 months, with the organisation saying even low levels can create severe health risks.
According to Christi Schroeder from IQAir, many international locations are making significant progress but as many as 93 cities had PM2.5 levels that had been 10 instances the beneficial level.
“There are a lot of international locations that are making massive strides in reduction. China began with some very massive numbers and they’re persevering with to lower over time. But there are also places on the earth where it is getting significantly worse.”
The data exhibits that total air pollution in India got worse in 2021, with New Delhi retaining the dubious honour of being the world’s most polluted capital metropolis. Bangladesh is the world’s most polluted nation for the second yr, with Chad in second place, after its knowledge was included within the survey for the primary time.
According to the Reuters report, China has been attempting to fight its air pollution drawback since 2014. In 2020, it was ranked 14th in the PM2.5 rankings but dropped to 22nd in 2021. The worst performing Chinese metropolis is the north-western city of Hotan, in Xinjiang. There, the typical PM2.5 readings got here in at over 100 micrograms, primarily as a result of sandstorms. However, Stunning has fallen to 3rd place within the world’s most polluted cities ranking, with the Indian cities of Bhiwadi and Ghaziabad overtaking it in 2021.
SOURCE: Reuters

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