Hi!
I beleive you will need to control one of the 0-10V outputs on the Miniserver. However as far as I can see there is no specific control implemented in the PyLoxone project for the analogue outputs.
What you could try is to add the chosen analogue output to the loxone config, expose as favourite so it turns up in the device list, then find the GUID as per the description https://github.com/JoDehli/PyLoxone#how-do-you-get-the-uuid and create some kind of control in HA to emit websocket commands to Loxone.
As the control for the analogue output is a number 0…10 you should look for some control that can be adjusted like this, maybe an input_number to test with? And for the final setup you can probably setup automation with some logic to send the right value to Loxone based on the air quality.
This is just a theoretical setup, I did not try or test anything, just an idea.