Pollen levels remain moderate on Tuesday in the Anglia region but will fall to low on Wednesday and Thursday.
They are expected to rise again on Friday and Saturday.
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A cold start with widespread frost and a few wintry showers spreading east across the region.
Three specially-painted RAF Tornado jets flew together for the first time at Marham in Norfolk in what is the aircraft's retirement year.
Road to be closed through town to allow repairs to historic buildings after fire.