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arXiv · 2505.16613

Long-term impact of PM2.5 on mortality is exacerbated when wildfire events occur

Federica Spoto·Francesca Dominici·Tarik Benmarhnia·Danielle Braun·Joan A. Casey
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Abstract

There is extensive evidence that long-term exposure to all-source PM2.5 increases mortality. However, to date, no study has evaluated whether this effect is exacerbated in the presence of wildfire events. Here, we study 60+ million older US adults and find that wildfire events increase the harmful effects of long-term all-source PM2.5 exposure on mortality, providing a new and realistic conceptualization of wildfire health risks.

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Federica Spoto, Francesca Dominici, Tarik Benmarhnia, Danielle Braun, Joan A. Casey. 2025-05-22. Long-term impact of PM2.5 on mortality is exacerbated when wildfire events occur. https://arxiv.org/abs/2505.16613

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