Thick, choking plumes of smoke from Canadian wildfires are pouring into major cities across the Great Lakes, Northeast and Mid-Atlantic, bringing dangerous air quality to more than 100 million people. The polluted air will last through at least Saturday in some areas as new waves of smoke waft south. …More than 100 million people in 18 states are under air quality alerts, many of which note that the air pollution is so high, even healthy adults will be affected. “The risk of health effects is increased for everyone,” the DC, air quality council said. …The smoke is being carried south from Canada in the wind. On Friday, the plume pushed farther south, making the DC area the new East Coast-epicenter of air pollution. Relief is coming as the wind pushes the smoke back into the Northeast and rain and storms are in the forecast