Daily exposure to fine particulate matter from traffic increases cancer mortality risk

Nature Sustainability, Published online: 26 August 2026; doi:10.1038/s41893-026-01927-3 Evidence from a multi-country analysis of 9.2 million cancer deaths suggests that traffic-sourced PM2.5 might contribute to the short-term PM2.5-related cancer mortality burden to a much greater extent than would be expected from its share of total PM2.5 concentration.