Embodiments of the disclosed invention provide a user customizable monitoring system. For example, in one embodiment, the user customizable monitoring system includes a set of user-programmable portable sensors and a communication hub for enabling a user to customize features associated with the set of user-programmable portable sensors. In one embodiment, the communication hub is further configured to receive data from the set of user programmable portable sensors and perform a user specified action based on the received data. In some embodiments, a user selects any desired combination of different types of user-programmable portable sensors that come preconfigured to operate with the communication hub. Additionally, in some embodiments, a user may configure particular parameters associated with a user-programmable portable sensor using the communication hub.