AirGradient Forum

Error adding Airgradient sensor to latest Home Assistant (temperature unit has invalid value)

Software integrations
#1

I’m trying to add my indoor airgradient sensor to home assistant and getting the following error: Unknown Error Ocurred

I’m running the latest version of HA (2025.7.1) and the airgradient sensor is running 3.3.9 and is model I-9PSL.

Here is the stack trace from HA:

Logger: aiohttp.server
Source: /usr/local/lib/python3.13/site-packages/aiohttp/web_protocol.py:481
First occurred: 3:56:49 PM (12 occurrences)
Last logged: 4:26:07 PM

Error handling request from 10.10.0.225
Error handling request from 10.0.1.7
Traceback (most recent call last):
  File "<string>", line 37, in __mashumaro_from_json__
  File "/usr/local/lib/python3.13/enum.py", line 726, in __call__
    return cls.__new__(cls, value)
           ~~~~~~~~~~~^^^^^^^^^^^^
  File "/usr/local/lib/python3.13/enum.py", line 1201, in __new__
    raise ve_exc
ValueError: None is not a valid TemperatureUnit

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
  File "/usr/local/lib/python3.13/site-packages/aiohttp/web_protocol.py", line 510, in _handle_request
    resp = await request_handler(request)
           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/usr/local/lib/python3.13/site-packages/aiohttp/web_app.py", line 569, in _handle
    return await handler(request)
           ^^^^^^^^^^^^^^^^^^^^^^
  File "/usr/local/lib/python3.13/site-packages/aiohttp/web_middlewares.py", line 117, in impl
    return await handler(request)
           ^^^^^^^^^^^^^^^^^^^^^^
  File "/usr/src/homeassistant/homeassistant/components/http/security_filter.py", line 92, in security_filter_middleware
    return await handler(request)
           ^^^^^^^^^^^^^^^^^^^^^^
  File "/usr/src/homeassistant/homeassistant/components/http/forwarded.py", line 83, in forwarded_middleware
    return await handler(request)
           ^^^^^^^^^^^^^^^^^^^^^^
  File "/usr/src/homeassistant/homeassistant/components/http/request_context.py", line 26, in request_context_middleware
    return await handler(request)
           ^^^^^^^^^^^^^^^^^^^^^^
  File "/usr/src/homeassistant/homeassistant/components/http/ban.py", line 86, in ban_middleware
    return await handler(request)
           ^^^^^^^^^^^^^^^^^^^^^^
  File "/usr/src/homeassistant/homeassistant/components/http/auth.py", line 242, in auth_middleware
    return await handler(request)
           ^^^^^^^^^^^^^^^^^^^^^^
  File "/usr/src/homeassistant/homeassistant/components/http/headers.py", line 41, in headers_middleware
    response = await handler(request)
               ^^^^^^^^^^^^^^^^^^^^^^
  File "/usr/src/homeassistant/homeassistant/helpers/http.py", line 73, in handle
    result = await handler(request, **request.match_info)
             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/usr/src/homeassistant/homeassistant/components/http/decorators.py", line 83, in with_admin
    return await func(self, request, *args, **kwargs)
           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/usr/src/homeassistant/homeassistant/components/config/config_entries.py", line 227, in post
    return await super().post(request, flow_id)
           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/usr/src/homeassistant/homeassistant/components/http/data_validator.py", line 74, in wrapper
    return await method(view, request, data, *args, **kwargs)
           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/usr/src/homeassistant/homeassistant/helpers/data_entry_flow.py", line 121, in post
    result = await self._flow_mgr.async_configure(flow_id, data)
             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/usr/src/homeassistant/homeassistant/data_entry_flow.py", line 336, in async_configure
    result = await self._async_configure(flow_id, user_input)
             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/usr/src/homeassistant/homeassistant/data_entry_flow.py", line 383, in _async_configure
    result = await self._async_handle_step(
             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
        flow, cur_step["step_id"], user_input
        ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
    )
    ^
  File "/usr/src/homeassistant/homeassistant/data_entry_flow.py", line 487, in _async_handle_step
    result: _FlowResultT = await getattr(flow, method)(user_input)
                           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/usr/src/homeassistant/homeassistant/components/airgradient/config_flow.py", line 108, in async_step_user
    await self.set_configuration_source()
  File "/usr/src/homeassistant/homeassistant/components/airgradient/config_flow.py", line 41, in set_configuration_source
    config = await self.client.get_config()
             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/usr/local/lib/python3.13/site-packages/airgradient/airgradient.py", line 109, in get_config
    return Config.from_json(response)
           ~~~~~~~~~~~~~~~~^^^^^^^^^^
  File "<string>", line 39, in __mashumaro_from_json__
mashumaro.exceptions.InvalidFieldValue: Field "temperature_unit" of type TemperatureUnit in Config has invalid value None
#2

Hi @njohnsn! Welcome to the community!

I’ll try to reproduce this on my end and escalate.

#3

I assume you are getting valid temperature readings on the display of the AirGradient?

#4

Hi @njohnsn! I tried to reproduce the issue on my end but wasn’t able to trigger the same error — most likely for the reason @MallocArray mentioned: my devices are all reporting valid temperature values whereas the error is a result of no temperature value being reported.

Could you please check if your device is currently reporting temperature data on the display? Also, is it connected to the AirGradient dashboard?

If so, it would be helpful if you could send us the device serial number via email to support@airgradient.com so we can investigate further from our side.