Pollen concentrations in Beijing to remain airborne through spring

Monitoring data from a WeChat applet called 'pollen monitoring forecast' by the Beijing Meteorological Service and Beijing Tongren Hospital showed that pollen concentrations in the city's air will remain high between March and May — as much as 1,600 grains per 1,000 square millimeters per day.

One of the reports on the applet said that during the period, the density of pollen in the air was around 400 grains.

When the grain count is higher than 100, it means that people allergic to pollen should protect themselves, according to the China Meteorological Administration.