Air quality improving in northeast, while wildfire smoke hangs over midwest

NPR reports that wildfire smoke from Canada is shifting geographically, with air quality improving in the northeast while persisting over the midwest, and that Trump has demanded an explanation from Canada regarding the smoke. The article is bylined to Kristin Wright at NPR, a major national outlet with strong editorial standards, providing a factual framing of both atmospheric conditions and political response. Independent search results from CNN, CBS, NYT, and weather services confirm the core facts: dense smoke from Canadian wildfires is affecting air quality for over 100 million people across the Midwest and Northeast, with multiple waves forecast through the weekend and beyond. Readers should monitor official air quality alerts from EPA/state agencies, track forecast updates from meteorological sources on smoke trajectory, and watch for any formal diplomatic developments between the U.S. and Canada regarding wildfire management and cross-border air quality impacts.