Petaluma Downtown station is a Sonoma–Marin Area Rail Transit station in Petaluma. It opened to preview service on June 29, 2017; full commuter service commenced on August 25, 2017. A new platform and facilities were constructed adjacent to the historic Northwestern Pacific Railroad station building, which opened in 1914. It is the system's first station to open in the city, with Petaluma North station set to open later.