AirGradient Forum

Matter standard protocol support

Hi, is there support for adding Matter standard support to the official firmware for AirGradient?

It would make it very simple to integrate it with other systems (HomeKit, HomeAssistant, Google Home, …).

Thank you

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Our current MCUs do not support matter.

Is there a plan to support it?

I think it could be also huge win for AirGradient. If it is ready out of the box to be paired with HomeKit, Google Home and other systems, it can sell to general audience, not just a technical users.

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Yes it is something that we look into once the matter compatible MCUs become more widely available.

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It looks like Espressif’s SDK for Matter just added support for air quality sensors a month ago:
Add Air Quality Sensor Device type and Concentration Measurement Clus… · espressif/esp-matter@d6c7357 · GitHub (although, it’s only available on the master branch, it hasn’t officially been released).

And it looks like the SDK is compatible with the ESP32-C3 on the new Air Gradient One v9.0! Although, it will only support Matter over Wi-Fi, not Matter over Thread.

Although I’ve got no idea how hard it would be to actually implement. The Matter SDK does take up quite a bit of space (~1-2 MiB), which doesn’t leave much space for application code on an ESP32-C3.

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Looking forward for Matter (and Thread possibly) support too!

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So it means that I can buy AirGradient now and it will gain Matter support later?

This is not confirmed. I mentioned above that we will look into it. It’s not only the technical implementation but matter also has high licensing costs so we need to see if it makes sense.

Yes, it would be really nice if we could use Matter instead of WiFi. I have to keep 2.4GHz wifi network just because of Airgradient :frowning:

I haven’t done anything with Matter yet, but it looks like the ESP32-C3 that the current AirGradients are based are physically able to support Matter over WiFi.
Is that even what you are looking for or since it still needs wifi would it still need your 2.4 GHz network?

https://docs.espressif.com/projects/esp-matter/en/latest/esp32/introduction.html#espressif-matter-solutions

If considering bringing in support for matter, it would be nice to consider also implementing the “Matter over Thread”-version, which utilizes the thread frequencies.
With “Matter over Thread” practically becoming the future standard of smart things and IOT-devices, it would make it rather easy to directly connect the AirGradiant to existing smart home solutions such as Google Home, Alexa, Apple Home (Apple HomeKit).
According to Espressif’s website, the models ESP32-C6 and especially the ESP32-C5 support Matter over Thread (next to conventional 2.4 and 5 Ghz Dual-band Wi-Fi 6, Bluetooth and Zigbee and MQTT).
Also the ESP32-H lineup (ESP32-H2, ESP32-H21 and ESP32-H4) supports Matter over Thread, Zigbee and Bluetooth, but lacks Wi-Fi.

I think it would really be awesome, if the ESP32-C6 or the ESP32-C5 would become the heart of the AirGradientOne, and Matter support would be offered right out of the box.
While I understand too less about the technical aspects of it (actual programming; PCB-design), I could offer to support in project management and other parts. I really would be happy to see this happen.
Also I know that with Espressif’s IDE-framework, it is nowadays supereasy to implement Matter-Support, and also receive the required certificates.
I see that the chance to connect (also) via Matter over Thread would really bring many benefits, whilst “traditional” more tech-savvy users still have the option to connect via Wi-Fi 6 and even Bluetooth 6.

Could this be the next step in also spreading it?

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Hi everyone,

I’m glad to hear that you guys are interested in knowing about Matter on our products. However, to my knowledge (at least for now), we have not had any solid decisions yet.

In the previous year (2025), we also discussed internally the possibility of adopting Matter, but we decided to hold off as we wanted to make sure about our readiness first.

So there’s no promise at the moment. But I don’t think we’ll rule out the possibility in the future. It’s still a matter of the right time for us.

In the meantime, if you really would like to have your AirGradient connected to your Matter, you can do it unofficially with Matterbridge integration or something similar. My post here could be helpful: Make AirGradient (Partially) Works with Matter with Matterbridge