Hi
I have created a module to use the OpenWeatherMap Air Pollution API Air pollution data using the onecall version 3.0 API. The module is based on the CFenner MMM-AirQuality module and Dennis Rosenbaum MMM-Template (Thanks)

You can find it on Github here MMM-AirQuality

It would be great to get some feedback, I have tested it on Raspberry Pi and MacOS without any issues.
The default Air quality index is for the UK, I am working on adding the indexes used around the world to add to the module soon.

Thanks for your time

Ira

See example image