AQI Reading Update 18 April 2019 Average PM2.5 reading in San Building, Year 2 Classroom Average PM2.5 reading in San Building, Year 2 Classroom Beijing outdoor AQI reading at 8am: 91. Data collected from US Embassy. Categories Air Quality Updates Our Blog Discover more Air Quality Updates AQI Reading Update 09 May 2019 Average PM2.5 reading in Li Building, Nursery Classroom AQI Reading Update 02 May 2019 Average PM2.5 reading in Li Building, Pre-Nursery Classroom AQI Reading Update 26 April 2019 Average PM2.5 reading in San Building, Year 3 Classroom AQI Reading Update 11 April 2019 Average PM2.5 reading in San Building, German Classroom