Smoke can come from various sources such as wildfires, factories, cars, and cigarettes. In North America, the smoke that found its way to the eastern U.S. likely originated from a cluster of fires near the border of the Canadian provinces of Manitoba and Ontario, just north of Minnesota .
When you see smoke in the sky it may be originating from a relatively local fire or a fire that is occurring several hundred miles away .
The smoke from wildfires can travel thousands of miles and affect air quality in areas far away from the fire .
