Comment 6 for bug 743553

Yes absolutely!
In the vala port branch, I've also refactored the Weather class into an abstract class and added subclasses for Google and Yahoo. I believe it'll be easier to maintain and keep things simple if we want to add another provider. I'll commit the changes there soon.
I've also added your patch as _get_apparent_temperature_C and used the NOAA formula for the heat index calculation. But it would be great if you can check and enhance them.