Crucially, the findings highlight that parents’ behaviours play a more significant role in determining children’s exposure levels than the children’s own choices.

In contrast, levels during school hours and commutes were lower and more stable, with occasional spikes, for instance, during walks (depending on the route) or when exposed to second-hand smoke from adult smoking in cars.

Home environments exhibited the highest and most variable PM2.5 levels, linked to indoor sources such as wood burners and adult smoking reported by the participating students.

The placement of sensors within households also significantly influenced exposure measurements.

Thank you so much for sharing… and coming along to the event! We’re very grateful for all your support and guidance and particularly as a member of our Wales Advisory Group. Thank you 💚

@wrexhamuniresearch.bsky.social