Wildfire Smoke Linked to Thousands of Deaths Each Year

Thu Feb 05 2026 04:41:47 GMT+0200 (Eastern European Standard Time)

A new study reveals that chronic exposure to wildfire smoke is responsible for an average of 24,100 deaths annually in the U.S., highlighting a growing health hazard.

A recent study published in 'Science Advances' indicates that wildfire smoke is linked to approximately 24,100 deaths in the U.S. per year. The fine particulate matter in the smoke, known as PM2.5, poses serious health risks, leading to respiratory and cardiovascular diseases. The findings underscore the increasing danger of wildfire smoke as climate change contributes to the severity and frequency of wildfires. Researchers stress the need for more studies and regulatory measures to manage this growing public health threat.

Chronic exposure to pollution from wildfires has been linked to tens of thousands of deaths annually in the United States, according to a new study.

The paper, published Wednesday in the journal Science Advances, found that from 2006 to 2020, long-term exposure to tiny particulates from wildfire smoke contributed to an average of 24,100 deaths a year in the lower 48 states.

“Our message is: Wildfire smoke is very dangerous. It is an increasing threat to human health,” said Yaguang Wei, a study author from the Icahn School of Medicine.

Scientists note that this link was expected. Michael Jerrett from UCLA noted, “The estimates they’re coming up with are reasonable,” and emphasized the need for more extensive research to strengthen these findings.

‘Real Lives Lost’

Research showed the PM2.5 particles can deeply infiltrate the lungs, triggering respiratory problems and worsening existing health conditions. Jerrett expressed concern over the increasing risk to vulnerable populations.

“Nobody’s going to have ‘wildfire death’ on their death certificate unless the fire actually burned them,” Jerrett commented. “But many of the people that are dying from this exposure are ones that are already more vulnerable. These are real lives that are being lost.”

The study points out how wildfires are exacerbated by climate change, and the increased frequency of such events points to a looming public health crisis. The study’s authors believe that regulating PM2.5 from wildfires is essential to mitigate this growing health threat.