A York researcher said the figure is not surprising and called for action on the issue.
Office for Health Improvement and Disparities figures show air pollution was responsible for 4.6 per cent of the deaths of people in York aged over 30 in 2022.
This was up from 4.4 per cent the year before, but was below pre-pandemic levels of 6.2 per cent.
Campaigners have criticised the government's slow response to "dangerous fine particle air pollution", and urged it to bring the UK's air quality targets in line with global health advice.
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