Wildfire Smoke Threatens Air Quality Progress in the U.S. and Beyond

A new study published in the journal Nature reveals that decades of air quality improvements in the United States have been eroded by wildfire smoke. Over the past two decades, air quality progress has slowed or reversed in most states, with some states rolling back 50% or more of their progress since 2000. Wildfire smoke significantly influenced air quality trends in 35 states, hindering the overall improvement. The consequences of deteriorating air quality and increased smoky days have profound impacts on public health, with studies showing increased emergency room visits for respiratory and cardiovascular problems. The long-term health consequences of wildfire smoke remain uncertain, but research suggests decreased lung function and potential cumulative effects from repeated exposure. With climate change exacerbating wildfires, the problem is expected to worsen if not addressed.