An articulating vent window assembly is provided wherein a vent window is pivotally mounted with respect to a sealing element for adjustment between a closed and an open position. A pivot mechanism is mounted near a peripheral edge of the vent window, providing articulation of the vent window around a pivot axis in proximity and substantially parallel to one of the peripheral edges of the vent window. The articulating vent window is adjustable between a closed position and at least one discrete open position by engagement of the pivot mechanism with spaced grooves provided in a corresponding detent member. A method for pivotally mounting a vent window in a vent window sealing element is also disclosed.