Add Yahoo as a preferred source to see more of our stories on Google. Large wildfires in Canada continued to cause concerning air quality levels across parts of the United States and triggered ...

Canadian wildfire smoke is impacting air quality across a dozen northeastern and midwestern U.S. states. Air quality is expected to remain poor in the Northeast through Tuesday, with some improvement ...

Safety Precautions You Can Take , if Wildfire Smoke Is Impacting Your Area. N95 masks have been found to block at least 95% ...

Editor's note: This story has been updated to reflect the current wildfire smoke conditions in the U.S. The original story was published Jan. 8, 2025. Smoke from Canadian wildfires continued to prompt ...