Front window formed in cabin of construction machine

Provided is a front window (13) formed in a cabin including an upper window (14) formed in a front face of the cabin and having a window frame (20) with an underside portion (19), and a lower window (15) disposed below the upper window so as to contact the upper window, while being capable of inhibiting condensed water from building up on the underside portion and rusting the underside portion. The upper window is provided with a glass plate (17) having a periphery to be attached to an outer face of the window frame, defining a clearance (C) between the underside portion and the glass plate to let out the condensed water generated on an inner face of the glass plate downwardly from the underside portion.