The AQI and temp are sourced from IQAir, which requires "Allow Internet Access" to be enabled in Gadgetbridge.

To use AQI, you need an IQAir API key. To get one for free, create an IQAir account, then create an API key in your user dashboard.

To specify the IQAir source, find your city on the IQAir website, then copy and paste the URL. It should look something like https://www.iqair.com/usa/new-york/new-york-city