Data Analytics in smart cities is the need of an hour. As the rapid growth of population density in urban cities demands that the services and an infrastructure be provided to meet the needs of city inhabitants. The Adoption of Data Analytics in Smart cities has been great for revitalizing the methods and techniques related to city development and public welfare. With this, there has been a great increase in the request for embedded devices, such as sensors, actuators, and smartphones that will lead to potential business for the new era of the Internet of Things (IoT).In this paper now let’s see how the Data Analytics has been adopted by the smart city and at the same time its impacts that have made a big profit and easy wellbeing of its population as a whole leading to urban planning.Smart cities initiatives are trying their best to explore advancements in the Internet of Things (IoT) domain to basically tackle common urban challenges such as reducing the energy consumption, reducing traffic congestion and also environmental pollution that is basically caused due to excessive pollutants within the city. So, some of the adoptions by smart cities in data analytics that has already been adopted and some that are still in process to improvise the system are as follows is explained in detail.