Particle image velocimetry (PIV) was applied to outdoor turbulent flow within and above urban scale model. This study shows the setup of the PIV system and some preliminary results. The PIV system achieved 60-min continuous measurements with the time resolution of 1/30 seconds for the section of 3x3 meters with the spatial resolution of 5cm. The 2 dimensional distribution of mean wind vector and turbulent statistics were successfully obtained. Also the PIV measurements were validated with measurements of ultrasonic anemometer which is conventional instrument for the investigation of atmospheric turbulence. Most of them showed good agreements within the error of 10%.