Residents were advised to keep their windows closed as dramatic photos showed thick plumes of black smoke filling the sky above the Staffordshire town on Monday afternoon.
The smoke from the blaze, at the Biffa Poplars Landfill in Lichfield Road, could be seen from the other side of Cannock.
Staffordshire Fire Service tweeted to say multiple crews using hose reel jets and breathing apparatus were dealing with the blaze, which is not far from McArthurGlen's recently opened Designer Outlet West Midlands
"Local residents are advised to keep their windows and doors shut," the service said on Twitter.
Crews were called to the scene at 2.30pm and remained there at 5pm.