The Guardian reports [theguardian.com] on a study conducted in Guildford, Surrey, England [wikipedia.org]. Researchers
[...] placed detectors for particulate pollution in prams and made 64 journeys to and from schools in Guildford at drop-off and pick-up times. They found that air pollution spiked at road junctions and by bus stands, and that fine particle pollution was higher in the mornings, when the roads are busiest.
“Fine particles show larger health impacts compared to their larger counterparts and at the young age children are more susceptible to particulate pollution, suggesting a clear need for precautionary measures to limit their exposure during their transport along the busy roadsides,” the researchers concluded.
Their work is published in Environmental Pollution (DOI:
10.1016/j.envpol.2017.02.021 [doi.org]).
The Guardian links to a Telegraph article which says that
Of the 51 areas across England, Scotland, Wales and Northern Ireland included in the [World Health Organisation's global pollution] database, 40 exceeded the WHO's guideline limits for 'PM2.5', or fine particulate matter, while 10 exceeded the guideline levels for 'PM10', slightly larger particulate pollution.
London, Glasgow, Leeds, Eastbourne, Port Talbot and Scunthorpe were among the worst areas.