I built an integration to get Observation data into an OGC SensorThings Server (tested with FROST server). Install via HACS:
SensorThings is a fully open source, standards compliant way to store and share sensor data.
In my case, I’m using it to publish data from the Makerfabs home assistant weather station which is currently in my living room, but perhaps someone could use this integration for something more practical.
If your interested in a deep-dive, take a look at the docs from British Geological Survey for their test FROST instance. There’s some really good video tutorials and a bunch of real data as well.
Full instructions in GitHub