Advertisement130 million Americans routinely breathe unhealthy air, report findsApril 24, 2024Alejandra BorundafacebookEmailWildfire smoke from Canada caused dangerously unhealthy air quality in New York City and across much of the U.S. in 2023. While air quality has improved greatly in the U.S. in recent decades, wildfire smoke and other climate-influenced problems are endangering that progress. (AFP via Getty Images)