It serves the western suburb of Altona, in Melbourne, Victoria, Australia.

[4][5] Westona is a crossing loop in the middle of a 10-kilometre-long section of single track between Altona Junction and Laverton.

[4] In 1965, the Victorian Parliament passed the Altona Railway Extension Act, which authorised a 1-mile (1.6 km) extension of the Altona railway, west to Maidstone Street.

[6] Despite a sign being erected on the future site of Westona station, proclaiming that a railway was to be built to there, nothing was done for almost two decades.

Westona station opened on 21 January 1985, when the railway line from Altona was extended.