Firefighters across the Midlands are to take part in a fourth strike on pensions between 10am and 2pm today.
The Fire Brigades Union says there will also be a further ballot for other forms of industrial action, which closes on 4 December.
Leicestershire Fire Service's Assistant Chief Fire and Rescue Officer Steve Lunn said:
"Emergency calls from the public will continue to be answered as our fire control operators will be unaffected by the action. However, we would advise residents that our response times may be slightly longer than they would normally expect."
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Fog patches and extensive low cloud at first will steadily lift and clear.
A murky start with mist and fog then gradually clearing, although some eastern coastal districts may remain cloudier.
Isolated showers should die out through the evening to leave a dry remainder of the night.