To　evaluate　the　effect　of　temperature　on　indoor　air　quality,　an　intervention　experiment　was　conducted　in　a　classroom　of　a　university　in　Beijing.　The　indoor　temperature　in　the　control　group　was　27　±　0.7 °C,　while　the　indoor　temperature　in　the　intervention　group　was　reduced　to　24　±　0.3 °C　by　running　two　distributed　air　conditioners.　During　both　measurements,　doors　and　windows　of　the　experimental　classroom　remained　closed,　and　air　temperature,　carbon　dioxide　(CO2)　concentration　and　TVOC　concentration　in　the　classroom　were　measured.　The　air　quality　in　the　classroom　was　evaluated　by　22　occupants　staying　inside　the　classroom　and　22　visitors　upon　entering,　separately.　The　results　showed　that　compared　with　27 °C　condition,　the　CO2　emission　rates　by　occupants　decreased　by　3.4%　when　the　indoor　temperature　was　reduced　to　24 °C.　Both　occupants　and　visitors　indicated　that　at　24 °C,　perceived　odor　intensity　was　significantly　reduced,　and　the　satisfaction　and　acceptability　of　air　quality　were　improved　considerably.　©　2023,　The　Author(s),　under　exclusive　license　to　Springer　Nature　Singapore　Pte　Ltd.