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Weather MQTT functions as a GUI to any weather station that is running the WeeWX software (http://www.weewx.com) and is also pushing messages to an MQTT server. It connects to the MQTT server (you can find the MQTT extension for WeeWX here: https://github.com/weewx/weewx/wiki/mqtt) and it listens for topic updates and it publishes their values to the GUI.
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