Huge clouds of thick smoke from out-of-control wildfires in Canada have drifted across the border into the United States. The smoke has covered major cities from the Midwest to the East Coast in a dangerous haze, forcing millions of people to stay indoors and disrupting everyday life.
By Thursday evening, global air trackers listed Chicago and Detroit as the two most polluted cities in the world, with New York City close behind. In states like Illinois, Ohio, and Minnesota, the Air Quality Index (AQI) went past 700 during the afternoon. This is well above the level considered "hazardous", which is the worst category for air safety. Because of the danger, local governments cancelled outdoor events, postponed a major soccer match in Chicago, and closed city beaches.
In New York City, local leaders warned that the dirty air is a serious health threat to everyone. New York Mayor Zohran Mamdani asked people to stay safe, especially since the smoky air is mixing with a heavy heatwave. To help residents, the city opened hundreds of air-conditioned cooling centres and handed out free face masks at train stations and libraries. Emergency teams said this is the worst smoke event the city has seen since 2023, when the skies turned bright orange.
The smoke is also causing big problems for outdoor workers and farmers. Erin Lucey, who runs an organic vegetable farm in Wisconsin, said the conditions felt strange and spooky. Erin Lucey explained that the farmworkers had to harvest vegetables in heavy masks during intense heat and warned that these worsening weather conditions show the real impact of the climate crisis.
Weather experts say it is hard to tell exactly when the air will clear, because smoke models can only predict about two days ahead. The state of Michigan expects the dangerous conditions to last through Friday. While things might start to get better over the weekend, the smoke could easily spin back around and hang over the area for a few more days.
Meanwhile, the situation in Canada remains critical. The province of Ontario is currently fighting more than 130 active fires, and at least 60 of them are completely out of control. Police have already evacuated 15 remote communities. Local leaders are asking the federal government for extra help, especially helicopters and planes, to move people out of danger. Ontario Premier Doug Ford shared on social media that more than 150 firefighting crews and 50 aircraft are working around the clock to stop the flames.
So far this year, Canadian wildfires have burnt about 1.9 million hectares of land, which is an area nearly the size of Slovenia. While this is still less damage than the record-breaking fires of 2023, the current situation shows just how much strain these worsening summer fires are putting on health, safety, and daily life across North America.
