Beijing chokes in heavy dust as sandstorm blows in

Updated:7 years, 10 months ago

Beijing (China), Mar 29 (ANI): A sandstorm in China's capital Beijing drove the city's air quality index to dangerous levels on March 26. The authorities warned people to keep their windows closed and wear dust masks. A 'blue' warning, the lowest in China's four-tier system of air quality warnings, was issued for residents in the city's north and surrounding provinces. An air quality reading by the US state department, based on concentrations of breathable particles known as PM 2.5, registered as "very unhealty". China's own official reading, calculating six different pollutants including PM 2.5, registered a "hazardous" rating.

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