We've added the ability to turn on 'Experimental Features' today - at the bottom of the forecast (website only for now) there is a button:
Pressing it turns on the experimental features for that browser. You can turn it off at any time by pressing the button again.
The first experimental feature is an additional cloud forecast taken from a different weather source, here is an example:
Clear Outside is not a weather forecaster - we take existing data sources and present the data in an astronomer friendly way. We know many of you (us included!) check multiple forecasts when looking ahead so this is one step towards Clear Outside being able to display multiple cloud forecasts from multiple sources.
If you have other sources you would like to suggest, please let us know.
As this is an experimental features we are not using the additional forecast to influence the traffic light ratings.
In the future, the idea may be to (optionally) display multiple cloud forecasts and give you the ability to choose which ones you would like to have displayed and which ones to discount that way if you have a particular data source for your location that seems to get it right more often, you may choose to only display that forecast.