This study aimed to evaluate the effectiveness of satellite remote sensing for PM_2.5 exposure assessment. Our analysis showed that while satellite-based PM_2.5 concentration estimates were slightly lower than observed values, they did not show a large discrepancy and had a positive correlation. This suggests that satellite remote sensing can be a useful tool for understanding concentration distributions in regions or periods with a limited number of monitoring stations. However, we also identified limitations, such as its inferiority to CMAQ (Community Multi-scale Air Quality) estimates in representing concentration gradients. In contrast, since CMAQ require extensive computational resources and specialized knowledge, satellite remote sensing can be considered a more versatile tool. In conclusion, these findings suggest that understanding the characteristics of satellite remote sensing is crucial for its effective utilization in future research.