Abstract Wireless sensor networks (WSN) have gained great importance in recent years in different investigations and different fields, due to its wide deployment, cost and utility advantages. The constant exposure to different gases produced by combustion engines and excessive levels of noise can cause alterations in human health, especially in medium and large cities in which the vehicle fleet increases year by year. In this project a real-time contamination monitoring system is developed using wireless sensor networks for the monitoring of carbon monoxide (CO) and noise pollution in the parking of the headquarters of the Corporación Universitaria Antonio José de Sucre (CORPOSUCRE) in Sincelejo, Sucre. The data collected by the sensor nodes are sent to a computer where they can be viewed on the Serial Plotter platform. The design of the system was carried out through a site study in order to obtain the data of the variables used to get the results of the present study. The monitoring system is based on the Arduinos and XBee modules, which results in a simple design and low cost due to the characteristics of the elements used. The data obtained will allow to determine if the CO emissions and the noise levels in the parking of CORPOSUCRE exceed or not the maximum limits allowed.