The intensification of urban heat islands, resulting from increased population densification in cities and the effects of climate change, makes bus shelters more vulnerable to extreme weather conditions, discouraging their use and negatively impacting the population’s quality of life. This research aims to measure the air and surface temperatures in a bus shelter in a Brazilian city with a humid subtropical climate. For this purpose, a standard shelter model located in Foz do Iguaçu was identified and defined as a case study. Air temperature was measured using dataloggers, and surface temperatures were recorded using a thermographic camera. The results from the monitoring campaign revealed high values of ambient and surface temperatures, indicating long periods of thermal discomfort for users. Considering the preliminary results of this research, the inadequate use of materials in the structure of bus shelters and the lack of bioclimatic strategies aimed at mitigating heat exposure and improving outdoor thermal conditions, thus establishing a mismatch between sustainable development proposals and their actual implementation, resulting in uncomfortable environments for users and consequently slowing down the process of encouraging the use of public transportation.