Regardless of how many devices you have, you will only have one key. Once you have a PWS device, you can go to the ' API Keys' tab to create a WU API key. Please note that unless if you have a physical PWS that you own, this particular PWS will not have any valid data, so do NOT use this particular PWS for getting weather data. Enter your address, and from the list of available devices, you can select any (e.g. You do not actually need to own a device physically. Here you will need to add a PWS (Personal Weather Station) device. Log in to WU, then click on ' My Profile' at the top-right side of the screen, click on the ' My Device' tab.

We do not know how long this will be valid till they make changes again, so please use the instructions below at your own discretion. Below we document the current way (as of July 16, 2019) to acquire a WU API key and PWS station name. From firmware 2.1.9, we have added back support for WU PWS (Personal Weather Station). At the moment of this writing, the OpenSprinkler weather service by default uses DarkSky API and no longer depends on WU. Update : between 2018 to 2019, Weather Underground (WU) was acquired by IBM, changing their API service and the process to apply for an API key.

Wunderground developer api key