This thesis goes through a study and a practical development of a system of indoor air quality management. Indoor air quality management system is been developed with the wireless sensor network concept in its focus. This system is capable of collecting data from a distributed network of sensor nodes. Visualization of data is made by a service of user applications which are distributed to network clients. Sensor network collects data about: • amount of smoke in an object, • amount of particle matter in the air of an object, • approximation on the amount of harmful gas or gases in the object, • current temperature, • and amount of relative humidity. Sensor nodes are deployed to a selected complex, collected data is been forwarded to a central server. Server is implemented as a web application. Thesis elaborates the basic principle of defining the system (of wireless sensor networks) with its model for the performance measurement. Study on all necessary components is been presented, including sensors, wireless modules and microcontrollers. Basic settings and preparation of the environment is been defined, e.g. for the functionality of relaying data from sensor network to the user application. Afterwards, one can find notations on a development of the user application which completes the functionality of the proposed system. Finally, measurement are been presented on the packet reception rate, which can indicate on the limitations of the system doe to the propagation of packets in indoor environment. Measurement can be used as a indication for strategies on setting up network configuration and node distribution. In the conclusion there are proposed improvements for the selected solution or possibilities of functionality conversion.