Results from a new pollution-detecting technology, which has been installed in Leicester city, could help with environmental decisions in the future, scientists said.
The technology uses a "heatmap" to show pollution levels in the area, showing levels of nitrogen dioxide (NO2) across the city.
As part of a project "developing solutions to the national problem" of improving overall air quality, scientists have also used a device to map air quality around the city.
Monitoring visible light, it measures how much is lost at specific wavelengths absorbed by nitrogen dioxide.
The device was previously used as part of the CityScan project, to measure pollution in Leicester, Bologna, and London during the Olympics.
More top news
The history of Clumber House is to be displayed in a new exhibition. The mansion in Sherwood Forest was demolished in 1938.
Showers will continue through the day and may turn locally heavy with a risk of hail and thunder.
A few sunny spells are likely but remaining rather cloudy with further locally heavy rain or showers expected through the morning.