Air Quality and other parameters for background animation

[rocksdanister]

Currently only the WMO Code is used to select animated background.
The original plan was to change animation based on temperature, air quality, windspeed etc.. multiple parameters.

Implementation
This is a huge undertaking and every background shader will need its own custom parameter.
Overlaying the effect maybe easier but it will not look as good in my opinion.
Look into this and try to avoid confusion/crowding the UI with many effects.. suggestions are welcome.

Example
For example in the following scenario black fog can be added to indicate AQI:

[vivadavid]

Anything that enhances the animations would be a welcome addition.