Apple iPhone iOS 8.1 - Manual (Page 94)

Chapter 13 Weather 94
View the current hourly forecast. Swipe the hourly display left or right.
See all cities at once. Pinch the screen or tap .
Go to Settings > Privacy > Location Services. See Privacy on page 41.
Use iCloud to push your list of cities to your other iOS devices. Go to Settings > iCloud, then
make sure iCloud Drive or Documents & Data is on. See
iCloud on page 16.