The Airborne Data Visualizer (ADV) is a tool for the exploration of in-situ measurements from multiple airborne missions. The ADV is a Python-based web application with menus for selecting individual flights and variables to view interactively on a map or on a series of plots within a web browser. Users can compare the geographic scope of measurements from multiple missions, explore the spatial and temporal variation of measurements, determine which data meet their needs, follow the links on the page to download individual data files, or view the dataset landing page to download larger amounts of data. The ADV tool is currently available for three NASA airborne missions: the Atmospheric Carbon and Transport - America (ACT-America), the Atmospheric Tomography Mission (ATom), and the Carbon in Arctic Reservoirs Vulnerability Experiment (CARVE).