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Beijing records best air quality in five years in 2017
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Beijing also recorded improvements in the density of other major pollutants such as sulfur dioxide, nitrogen dioxide and PM10, the latter also 20 percent lower than in 2016. (Shutterstock/File)
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ir quality in China's notoriously smog-ridden capital in 2017 was the best since pollution control measures were implemented five years ago, the Beijing government announced Wednesday.
The city met its targets with year-on-year "improvement of regional air quality and overall favorable meteorological conditions", a statement posted on the Beijing Municipal Environmental Protection Bureau's website, said.
According to the bureau, the average PM2.5 level in 2017 was 58 micrograms per cubic meter -- down 20.5 percent from the year before.
PM2.5 is a measure of the density of hazardous particulate in the air. The World Health Organization recommends an annual PM2.5 level of 10 micrograms per cubic meter.
Beijing also recorded improvements in the density of other major pollutants such as sulfur dioxide, nitrogen dioxide and PM10, the latter also 20 percent lower than in 2016.
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And while the number of heavy pollution days decreased from 58 in 2013 to 23, Beijing also enjoyed 226 "good air" days last year -- 28 more than in 2016, the bureau said.
Li Xiang, a bureau employee, told the official Xinhua news agency that "demolition of coal-fired boilers, phasing out vehicles with high emission and upgrading of industrial structure" have all contributed to smog reduction.
In the last five years, she said, Beijing has shut down six cement plants and closed or upgraded nearly 2,000 companies in printing, casting, furniture manufacturing and other sectors.
The capital has experienced an unusual streak of clear air this winter, a season that is historically the worst for smog. In November, PM2.5 levels dropped 54 percent year-on-year.
Notably there has been absence of coal in at least three million homes surrounding Beijing, with many towns and cities newly equipped with gas or electric heaters.
However, some residents have complained of inconsistent or unaffordable heating in designated "no coal" zones in northern Hebei province.
