Millions of people across the Great Lakes, Northeast, and Mid-Atlantic states are experiencing unhealthy air quality due to wildfires burning in Ontario, Canada, and the Boundary Waters Canoe Area Wilderness in Minnesota.The smoke has enveloped Washington, D.C., creating an eerie orange-hued haze that obscured iconic landmarks like the Washington Monument and Lincoln Memorial.Air quality monitoring services report some of the worst pollution levels globally in cities such as Detroit and Washington, D.C., prompting health advisories for vulnerable populations including those with respiratory conditions, older adults, and children.The National Weather Service warns smoky conditions will persist for at least a week, depending on wind patterns.While temporary relief may come from weekend storms, the fires remain largely uncontrolled.U.S.officials have closed areas in Minnesota to combat the blazes, and Canadian Premier Doug Ford defended his country's forest management practices after U.S.President Donald Trump criticized Canada over the smoke.The smoky air also raised concerns about potential impacts on Sunday’s World Cup final between Spain and Argentina at MetLife Stadium in New Jersey.Authorities distributed free face masks, canceled outdoor events, and opened cooling centers to mitigate health risks.