Overview

• Nearly 200 wildfires burning across Manitoba, Saskatchewan and Ontario have charred over 16.5 million acres this season, generating expansive smoke plumes into the United States.
• A stubborn high-pressure ridge over the Midwest is trapping fine particulates at ground level, preventing dispersion and extending surface haze across the region.
• Air Quality Advisories cover more than ten states from Wisconsin to New England, with Michigan issuing its tenth consecutive advisory and some areas reporting 'unhealthy' air quality.
• Health officials warn that PM2.5 particles in wildfire smoke can penetrate deep into the lungs and aggravate asthma, heart disease and other conditions, advising sensitive groups to limit outdoor exertion.
• Macomb County Commissioner Candice Miller has urged U.S. Ambassador Pete Hoekstra to press Canada for stronger wildfire suppression and improved forestry management to reduce cross-border smoke impacts.