More residents from northern communities are being moved to safer, southern locations because of forest fires and smoke from fires.
The MNR notes most people being evacuated are the very young and the very old.
About 270 people have been moved from Sandy Lake to Geraldton.
Roughly 200 people have been relocated from Deer Lake to Thunder Bay over the past few days.
Meantime, residents of Terrace Bay and Schreiber are now back home after being evacuated briefly because of smoke from fires.