In this study, we analyze the potential effects of the Asian yellow dust outbreaks on the performance of Korean photovoltaic systems. Particulate matters from the Asian yellow dust outbreaks in the deserts of Mongolia, northern China and Kazakhstan are typically transported to Korea. Considering the closeness of Korea to the origin, we may conjecture that the effects of the Asian yellow dust on the performance of Korean photovoltaic systems should be significant. The potential reduction of the solar spectral irradiance due to Asian yellow dust events in Korea is investigated using a clear-sky spectral radiation model, and the performance of photovoltaic systems under reduced irradiance is estimated by using a simple analytic model representing typical photovoltaic cells. Comparison of performance under severe Asian dust events and that under a typical, clear condition is made to evaluate overall influence of the Asian dust outbreaks.