The temperatures for airports is in Celsius. there should be a way to change it to Fahrenheit.
We have an open work item to have the API provide the correct temperature scale to the app. It should be available soon.
When making flight alerts in the app for one segment of a multi segmented flight number (for instance AAL 187 from KBOS-KORD-ZBAA) I only clicked on the KORD-ZBAA segment and it made alerts for all segments. This happens on any mulit segment flight number. Running latest beta and iOS 9.1. iPhone 6.