Re: [weewx-user] Re: AirGradient AQI monitors

Thu, 30 Oct 2025 11:23:05 -0700

I had not heard of this monitor.  It intrigued me as it offers carbon dioxide (CO2), total volatile organic compounds (TVOC) and nitrogen oxides (NOx) readings.  As such, I ordered indoor (AirGradient Now) and outdoor (AirGradient Open Air) units.

I wrote the following driver for the sensors:

The extension is flexible as to what reading one wants to write to loop records.  In my case, since I want to keep using my PurpleAir monitor for PM 1.0, PM 2.5 and PM 10.0 readings, I’m running this AirGradient extension to only write out NOx, TVOC and CO2.  (But, of course, one can use the AirGradient extension to write all of its readings to Loop records).

Dan, if you want to give this extension a try, I’d be happy to hear your feedback.

Cheers,
John

On Oct 18, 2025, at 6:59 PM, vince <[email protected]> wrote:

If you dig through their github repo it suggests doable. You’d need to base something on the Purple Air or Davis Airlink extensions and salt to taste, so to speak.  https://github.com/airgradienthq/arduino Is the rather hard to find repo. So much marketspeak.

On Saturday, October 18, 2025 at 6:17:29 PM UTC-7 Dan Hinckley wrote:
Has anyone had any experience with these units? In particular, with whether you can access the data locally?

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