The concentration of fine particulates in the air in Beijing is currently 46.2 times the World Health Organization's annual air quality guideline value, according to IQAir, a website that issues air quality data and information.
Sandstorms, dangerous pollution return to Beijing streetinsider.com - get the latest breaking news, showbiz & celebrity photos, sport news & rumours, viral videos and top stories from streetinsider.com Daily Mail and Mail on Sunday newspapers.
China Hit by Yet Another Sandstorm as Capital Chokes in Dust Cloud - The concentration of hazardous PM10 particles in Beijing was more than 20 times the daily maximum recommended by the WHO
Thick sandstorms will hit Beijing and several provinces through Wednesday, and Chinese forecasters have advised citizens of respiratory dangers and very low visibility while travelling, state media reported.
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