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InfluxDB
Power Real-Time Data Analytics at Scale. Get real-time insights from all types of time series data with InfluxDB. Ingest, query, and analyze billions of data points in real-time with unbounded cardinality.
Not sure if this one is any good, but I just bought an Airthings wave (not delivered yet) for radon measurement. Not sure if it is as trustable as higher end ones, but this one was pretty expensive already. It also has a custom component for HA.
You can use a rpi to pull data over BLE but the range is pretty short. It publishes a 24 hour average as its lowest measurement period, so don't expect it to react quickly to any changes. https://github.com/hpeyerl/airthingswave-mqtt
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