See where wildfire smoke is getting worse in the U.S.

Washington Post, Sept. 18, 2025, by By Shannon Osaka, 

John Muyskens and 

Daniel Wolfe

Every year, millions of Americans’ lungs are filled with wildfire smoke — smoke that stretches from the northwest tip of Washington state to the East Coast’s most populated cities. It’s blown in from thousand-acre Canadian wildfires and from blazes in the American West. That smoke penetrates into the bloodstream and deep into organs, triggering lung and heart disease. And, according to a new study, it’s already killing 41,000 people per year — or more than all the fatalities from traffic crashes in 2024. Read more . . .