Smoke from the fire at a factory in Hereford is said to be continuing to affect some nearby properties.
The council is advising residents in Rotherwas and Tupsley to remain indoors and keep windows and doors closed for the rest of the day.
The material burning is said to be largely wood and the impact on people's health is expected to be minimal.
The fire service say 'good progress' is being made.
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A cooler and cloudier day on the whole, although it will remain dry in most places.