Air Quality Reading Update 06 September 2018 Average PM2.5 Reading: Year 3 Classes. Beijing outdoor AQI reading at 7am: 46. Data collected from US Embassy. Categories Air Quality Updates 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 18 April 2019 Average PM2.5 reading in San Building, Year 2 Classroom