So of course i got the app, since 64px.com only makes the best chrome apps :) The new Weather app is great. Recommend you go get it.
The app is dead simple , requiring zero user input or set up. It is ultra clear to read at a glance. The icons are tasteful and clear.
I am a fan of various weather apps , Currently for example. Also Awesome Weather for Chrome (an app i made, but stopped supporting due to Google shutting down iGoogle's unofficial weather API which powered it).
Enjoy, click to get the Chrome Extension: