Under The Never Sky Under The Never Sky Series, Book 1.

Exiled from her home, the enclosed city of Reverie, Aria knows her chances of surviving in the outer wasteland-known as The Death Shop-are slim. If the cannibals don't get her, the violent energy storms will. She's been taught that the very air she breathes can kill her. Then Aria meets an Outsider named Perry. He's wild-a savage-and her only hope of staying alive. A hunter for his tribe in a merciless landscape, Perry views Aria as shelter...