Abstract: An inflatable shelter apparatus is set forth wherein a series of inflatable ribs are in fluid communication and association with an apex distribution valve for directing compressed air into the series of downwardly directed vertical ribs. Polymeric panels are secured about the exterior of the ribs to form an enclosure. The enclosure is secured at its base to an elongate planar sheet formed with apertures along the perimeter for securement of the shelter to a support surface. Each of the ribs is formed with at least a single one-way valve therein to prevent pneumatic discharge of all of the ribs upon leakage from a single rib.