Hi everyone!
I built my first Home Assistant app Wunder2MQTT. It’s a local HTTP bridge that intercepts data from Weather Underground compatible weather stations and publishes it to HA via MQTT.
Please note that I am a complete beginner at making HA app, and so far, I’ve only been able to test it with my own single weather station.
I would be incredibly grateful if anyone could test it out and share some feedback or bug reports.
Just a quick update!
The add-on has been running flawlessly on my own Home Assistant for the past few weeks without a single hiccup or restart.
If anyone here owns a Wunderground-compatible station and wants to completely block it from the cloud, give it a try!
I’ve been pondering about doing this for ages, was super happy to find it already done, thank you!
Since on my weather station I couldn’t modify the URL, I just needed to override IP for rtupdate.wunderground.com. Everything worked like a charm, super easy!
Glad to hear it’s working well for you! Thanks for the rtupdate.wunderground.com tip, I’ll definitely add it to the documentation.
Out of curiosity, did your station happen to have any extra sensors (like UV or solar radiation)? If you haven’t checked yet, you can turn on the “Log Raw Data” option in the add-on settings. It will show you in the logs if your station is sending any additional data in the background, which you can then easily add to the sensor list.
Let me know if you find anything interesting!
Yes, I checked it right away 
. It had dewptf which I assume to be dew point in F, it was easy to add and shows up correctly.
It also had some reporting frequency sensor that I decided to ignore.
The log raw data approach was nice and simple.