Air Quality Cluster Only Partially Visible on HomePod – Only Temperature & Humidity Show Up

[Prajwal Tayade]

Hi,

I’m working on a Matter application using the nRF Connect SDK v2.9.2. I’ve added the AirQuality cluster into my device with sub-sensors: CO₂, PM1, PM10, TVOC, and Temperature/Humidity.

On the chip-tool controller, I can subscribe and receive reports for all the air quality sub-sensors correctly (e.g., CO₂, PM1, PM10, TVOC, etc.). So, the cluster and attributes are functional.

That includes data from endpoint 4 (CO₂, PM1, PM10, TVOC), endpoint 2 (Temperature), and endpoint 3 (Humidity). Everything works as expected.

However, when I commission the same device to Apple Home (HomePod), only Temperature and Humidity show up in the Home app. None of the other air quality attributes (like CO₂ or PM1 ...) are visible.

Is there a limitation in HomeKit/HomePod that only supports certain parts of the AirQuality cluster?

Any guidance or examples would be greatly appreciated.

Setup:

• Platform: vscode

• SDK: NCS v2.9.2

• Clusters used: TemperatureMeasurement, RelativeHumidityMeasurement, AirQuality (with CO₂, PM1, PM10, TVOC)

• Tested controllers: Apple HomePod + iPhone, and chip-tool (Linux)

Thanks,
Prajwal

[Marte Myrvold]

Hi,

I will check internally if this is a known issue.

Can you test with other commercial ecosystems, such as Google Home, to see if it shows up there?

Please share the following:

• iOS version
• Apple Home app version
• HomePod firmware version

Best regards,
Marte

[Prajwal Tayade]

ios version : 18.5

Apple Home App Version :  16.2 

Home Pod Firmware Version: 18.5(22L572)

[Prajwal Tayade]

 hii Marte Myrvold ,

I hope you're doing well! I just wanted to know is there any update.

Best regards,

Prajwal

[Vidar Berg]

Hi,

There's a compability matrix at the Causaway portal accessible to CSA members that show which device types the various gateways are supposed to have support for. I can't share it here. But as Marte suggested, it would be good if you test this with other commercial ecosystems to try rule out any configuration issues with your accessory. If it works with other hubs, I would recommend reaching out directly to Apple.

Best regards,

Vidar