Curnow was born in Stanthorpe and grew up in Toowoomba.[1] He commenced working for the ABC in 1998, working as a reporter in Adelaide, Broken Hill and Port Pirie before becoming weekend anchor of ABC News Queensland in 2007.[1][3]
Curnow anchored the bulletin from 2009 until 2013, when he was replaced by Karina Carvalho.[3]
After he was replaced by Carvalho, Curnow commenced hosting the statewide Evenings radio program on ABC Radio Brisbane.[4] In 2017, the ABC announced Curnow would be taking leave "for the foreseeable future".[5]
Curnow has also hosted the ABC's local Brisbane Anzac Day telecast.[6][7]