Objects moving through the air at high speeds can generate heat and cause the surface temperature to rise. Understanding viscous or aerodynamic heating is crucial in fluid dynamics and designing flying objects. This study focuses on a long, thin object moving through the air subsonically at speeds up to 250 m/s. The mathematical model considers compressible and unsteady flow with turbulence modeling. The goal is to understand the temperature rise near the object's surface. This investigation employs a compressible flow solver to solve continuity, momentum, and energy equations. The temperature varies the most near the object's nose, while downstream surfaces have a more uniform temperature except for the trailing end. The flow accelerates over the nose, creating a high-speed region. As airspeed increases, areas of faster flow on the nose extend sidewise. This study analyzes high temperatures in different areas, such as the stagnation point, aerodynamically heated surfaces, and wake region.