Leicester has become the first city in the world to have its air quality mapped out using an airborne pollution-scanner.
This bird's eye image shows how pollution levels vary across the city.
Images were taken by researchers from the University of Leicester from a survey plane flying 900m above the city's roads, parks, industrial estates and houses.
The European Commission is calling on the government to find a solution to improve air quality.
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Rather cloudy with occasional outbreaks of rain, or showers.
Rather cloudy and feeling cool, with a freshening northwesterly breeze.
Pollen levels will rise towards the end of the weeks as warmer weather sets in.