Infrared thermography (IRT) is a non-destructive technique that facilitates the detection and localization of cracks inconcrete structures, particularly in transportation infrastructure components, contributing to Structural Health Monitoring (SHM). Concrete structures are exposed to various surrounding environmental conditions, and understanding how these conditions impact crack formation and temperature distribution is crucial for assessing structural health. This study analyzes the thermal characteristics of concrete cracks under different surrounding environmental conditions, such as temperature, humidity, and wind speed, and investigates how these variables affect the temperature distribution and gradient of cracks.