The United Nations’ Sustainable Development Goals (SDGs) are aimed at securing the future for upcoming generations. This study sought to gather data relating to pollutant and greenhouse gas emissions, along with data from existing sensors within the vicinity of the Lisbon Cruise Port (TCL), to determine the impact of cruise activities on air quality. The research encompassed 47 distinct inspections. The analysis revealed that large cruise vessels predominantly use Heavy Fuel Oil (HFO) as their primary fuel source, while smaller to medium-sized vessels tend to favor Marine Gasoil (MGO). Despite MGO's higher calorific value compared to HFO, it was observed that MGO-powered vessels exhibit higher fuel consumption per ton in comparison to HFO-powered vessels. Regarding emissions, it was determined that the TCL terminal experiences a notable influence from ship emissions; however, these emissions do not significantly affect the city and do not substantially change air quality. Consequently, while the cruise industry remains imperfectly sustainable, the International Maritime Organization (IMO), the European Community, and the Port of Lisbon are implementing measures to ensure the achievement of sustainable development objectives.