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Sandstorm leaves mark on city's air quality

A sandstorm that hit north China last night is making its way southwards and may affect the city today, local environmental authorities said.

The sand storm, accompanying a cold front, pushed the concentration of PM10 particles up to 1,000 micrograms per cubic meter — 20 times the World Health Organization's recommended level of less than 50 - in Beijing last night, while also pushing visibility down to less than one kilometre meters. Authorities said it was the strongest storm of its kind to hit Beijing in 13 years.

According to the Shanghai Environmental Monitoring Center, the storm's influence in Shanghai will be much lighter than in Beijing.

By 2pm, the air quality index was recorded at 109, fitting into the lightly polluted level, with the concentration of PM2.5 and PM10 particles reaching 82 and 159 micrograms per cubic meter respectively. Both the two concentration readings are found still trending upwards.

The air is likely to remain lightly polluted later today but the possibility of short-lived moderate pollution has not been crossed off.

Elderly people and children are warned to reduce their outdoor activities.

The city's air quality is expected to improve tomorrow.

 




 

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