Many of us don't give much thought to the air that we breathe, but scientists from the University of Leicester are doing just that to learn how pollution affects us.
In a world-first experiment they've mapped the whole of the city by plane, to see how fumes and emissions are carried around. They hope the work will mean we can lead cleaner, healthier lives. Chris Halpin reports.
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Rain, occasionally heavy, will clear around midday, then sunny intervals will develop during the afternoon. A windy morning with gales.
Wet and windy with a spell of heavy and squally rain crossing all parts. This will clear through the afternoon.
Westminster officials have said they support the idea of a statue of the former Prime Minister, but the current proposal is not right.