Which wildfire smoke plumes are hazardous? New satellite tech can map them in 3D for air quality alerts at neighborhood scale

Ph. Smoke from Canadian wildfires prompted air quality alerts in Chicago as it blanketed the city on June 5, 2025. Scott Olson/Getty Images Jun Wang, University of Iowa Canada is facing another dangerous wildfire season, with burning forests sending smoke plumes across the provinces and into the U.S. again. The pace of the