The event, which runs until 5 p.m., is scheduled to block off downtown Nyack at Main Street and Broadway to allow more than 300 vendors to display their products, according to the Chamber.
Art, jewelry, clothing, crafts, home decor, international food and a host of other street fair items are expected to be available for purchase.
According to the Chamber, a children's carnival will also offer entertainment for families.
To learn more about the SeptemberFest Street Fair, visit the Nyack Chamber of Commerce online.
Click here to follow Daily Voice New City and receive free news updates.