Around 100 tonnes of landfill caught on fire at Hempsted Household Recycling Centre on Tuesday evening.
Thick black smoke could be seen as far away as Cheltenham as firefighters tackled the blaze.
One crew from Gloucester south were called to the centre at 7.45pm.
A spokesman for Gloucestershire Fire and Rescue Service confirmed most of the flames had been extinguished on firefighters arrival and was under control.
The crew were expected to remain on scene until 10.30pm to damp down the fire.
He said: "Essentially it was around 100 tonnes of landfill affected.
"It is not considered to be suspicious.
"There has been a lot of smoke and that is expected to continue, but that seemed to be dying down at around 10pm."
There's a massive fire over Hempstead #Gloucester way, I do hope everything / everyone's ok.
— Mel Nicholls (@Dolly2racer) April 15, 2014
Gloucestershire County Council, which runs the centre, advised residents to keep their windows closed as the smoke filled the moonlit sky.
Drivers were also warned to be careful when driving near the area.
Mini apocalypse at hempsted tip? pic.twitter.com/g5O5Ts0uRa
— Rich Evans (@Evari) April 15, 2014
A member of the public dialled 999 to report the blaze to the recycling centre, which opens every day until 6.15pm.
The environmental impact of the fire is currently unknown.
Residents from as far away as Shurdington and Cheltenham town centre reported seeing the smoke.
Hempsted Tip is on fire! I wonder how long that will burn for! :-( pic.twitter.com/v1WLoJNvZ3
— Sali Gray (@saligray) April 15, 2014