Title: Canadian Wildfire Smoke Impacts Air Quality in Northern US States Canadian wildfire smoke has engulfed the northern tier of the United States, causing unhealthy air conditions in more than a dozen states. Cities including Chicago, Detroit, New York, St. Louis, and Cleveland are currently experiencing decreased visibility and poor air quality. Approximately 70 million people in these regions are affected. The air quality alerts, which range from Montana to Vermont, have been triggered by smoke levels reaching an alarming Level 4 (unhealthy) on the Air Quality Index. Even some areas in northern Alabama are being impacted by the hazardous…