A switchgear exhaust assembly for controlling flow of exhaust from exhaust ports of a switchgear has an enclosure that is couplable to the switchgear to substantially enclose the exhaust ports. The enclosure defines a primary exhaust chamber for receiving exhaust flowing through the exhaust ports and allowing gases of the exhaust to expand and cool down. A top wall of the enclosure has a top layer and a bottom layer defining at least one secondary exhaust chamber. The bottom layer has openings whereby exhaust in the primary exhaust chamber flows to the secondary exhaust chamber. The top and bottom layers further define one or more side openings that provide fluid communication between the secondary exhaust chamber and a space surrounding the enclosure, thereby allowing exhaust to be expelled into the space.