South Wales Fire Service are tackling a blaze at GLJ Recycling on the Newtown Industrial Estate, in Cross Keys, Caerphilly.
A spokesperson from the fire service said 700 tonnes of scrap metal and tyres are well alight.
4 pumps and a water bowser are in attendance at the scene.
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Outbreaks of light rain or drizzle expected around the coast and hills.
Mike and Cynthia from Ystradgynlais flew out to the German city for a weekend away.
Fine and dry at first but becoming largely cloudy with outbreaks of rain or drizzle.