One of the environmental variables with great influence on the mental and physical health of people is the noise level. Considering that air transport is among the main sources of noise, in this article we propose as a contribution the development of an IoT system for the monitoring and analysis of noise levels in areas near the airport of the city of Cartagena de Indias. The proposed system is articulated in the four layers of the conventional IoT architecture (capture, storage, analysis and visualization) and seeks to improve the