Dossier
Omar Mitchell
Coverage of Omar Mitchell in the Nexus archive.
- Canadian wildfire smoke turns air hazardous in the US Midwest. Officials say stay inside
Canadian wildfire smoke caused hazardous air quality across the U.S. Midwest and Great Lakes regions, with visibility reduced to half a mile in some areas. Officials warned of health risks from microscopic particles in the smoke, which could persist for weeks or months as fires continue.