AQI Reading Update 14 January 2021 Average PM2.5 reading in San Building, Year 4 Cranes Classroom. Loading... Average PM2.5 reading in San Building, Year 4 Cranes Classroom. Beijing outdoor AQI reading at 8am: 117. Data collected from US Embassy. Categories Homepage Featured Article Discover more Homepage Featured Article AQI Reading Update 14 October 2021 Average PM2.5 reading in Li Building, Nursery Rainbow Fish Classroom Under the Sea 14 October 2021 'We've got no troubles, life is the bubbles, under the Sea.' Exercising in Space 14 October 2021 Besides eating and sleeping, what do astronauts spend more time doing in space than anything else? It's exercise. Han Lu(Cold Dew) 08 October 2021 Han Lu (Cold Dew) falls on 8th or 9th October each year when the sun reaches the celestial longitude of 195.