These are the 10 UK areas with the worst air quality

People living in more than 100 UK council areas are breathing dirty air that breaches a ‘safe’ limit for pollution set by the World Health Organisation (WHO) – above which increased deaths are likely.

Areas have been ranked by PM2.5 concentrations recorded in 2019 by the Department for Environment and Rural Affairs (Defra).

PM2.5 are solid or liquid particles with a diameter at least 30 times smaller than the width of a human hair. It can be naturally occurring, such as from sea spray or dust storms, or man made, from soot caused by burning fuels for transport, industry and heating.