Wildfire smoke could contribute to tens of thousands of U.S. deaths annually

A study published in Science Advances estimates wildfire smoke could account for up to about 24,100 U.S. deaths per year, based on satellite exposure and mortality data from 2006–2020. Researchers report roughly 5,594 additional deaths for each 0.1 µg/m3 annual increase in wildfire-related fine particle pollution.

Researchers estimate that wildfire smoke could contribute to tens of thousands of deaths in the United States each year. The study, published in Science Advances, projects as many as about 24,100 deaths annually from wildfire-related fine particle pollution. The team compared satellite-based measures of smoke exposure across the U.S. with mortality records from 2006 through 2020. Authors noted that long-term exposure to these fine particles is linked to increased risks for heart, lung and brain disease. Key findings: - The study estimates wildfire smoke could contribute as many as about 24,100 U.S. deaths per year. - Researchers compared satellite smoke exposure data with deaths recorded from 2006–2020 to estimate health impacts. - The team reported about 5,594 additional deaths associated with each 0.1 µg/m3 annual increase in wildfire-related fine particle pollution. Summary: The study indicates a substantial public health burden from long-term exposure to wildfire smoke and related fine particle pollution across the United States. Undetermined at this time.