There are hundreds of sites across the city where air quality is being monitored, with the results published by Sheffield City Council.
The latest figures show that in 2023, the level of nitrogen dioxide (NO2) recorded in one area of Sheffield stood at 65 microgrammes per cubic metre (µg/m3).
That is six and a half times the limit of 10 µg/m3 recommended by the WHO, which was reduced in 2021 from 40 µg/m-3.
Below are all 13 locations within Sheffield where NO2 levels in 2023 were 40 µg/m3 or above.
We have only included the highest result for each street or other location. For example, Sheffield Midland railway station, where there are a number of monitoring sites with NO2 levels of 40 µg/m3 or above, has been included as a single entry. Despite the heavy pollution in parts of Sheffield, the data suggests air quality within the city is gradually improving.
In 2018, the highest figure recorded was 92 µg/m3.
Earlier this year, the council said initial results showed that the Clean Air Zone, introduced in February 2023 to reduce air pollution in and around the city centre, was starting to have the desired effect.