Hans Wehrili's Nude in Steel, 1967 is displayed with a COVID-19 mask on outside the Palo Alto library in Palo Alto, Calif., on July 29, 2021. (Harika Maddala/ Bay City News)

The Vallejo City Council voted Tuesday to indefinitely extend the city’s requirement to wear a face covering indoors regardless of vaccination status.

The mandate requires everyone age 4 and up to wear a mask in indoor public spaces like grocery stores, offices and restaurants.

The council adopted the mandate Aug. 31 and cited frustration with Solano County declining to implement a similar requirement amid the Bay Area’s surge in delta variant COVID-19 cases.

The initial mandate was to remain in place for six weeks, at which time the council would consider its extension.

At its meeting Tuesday night, the council chose to keep it in place “until circumstances regarding the contraction and transmission rates of Covid-19 in Solano County shift,” the city said in a statement.

The city did not specify how long it could take for those circumstances to change.