This webinar is a hands-on tutorial demonstrating the steps to construct a real-time smart city dashboard. Th objective is for developers to learn OGC SensorThings API from a coding perspective. The dashboard uses OGC SensorThings API as the data source. It has five examples. The first and second examples show how to develop a time-series chart for SensorThings API. The third example is using Leaflet.js to show the IoT locations with SensorThings API. The fourth example is to build two simple widgets to show the latest reading and previous reading of an IoT datastream. Finally we demonstrate how to put everything together. Recording available on youtub: https://www.youtube.com/watch?v=W-_FgpwscCo.