More Canadian wildfire smoke shrouds US midwest, mid-Atlantic and north-east

• 01Smoke from wildfires in Ontario is affecting approximately 109 million people across the Midwest, Mid-Atlantic, and Northeast regions of the United States.
• 02Air quality index readings in Chicago and Detroit reached 361, classified as "hazardous," prompting warnings for residents to stay indoors.
• 03Washington DC recorded an air quality index of 247 and Baltimore recorded 281 as of 6am eastern time on Friday.
• 04New York City's air quality index was 184 early Friday, classified as "unhealthy," before improving to 124.
• 05The Canadian Interagency Forest Fire Center reported that Canada’s largest fire near Wabakimi provincial park had spread across 787,802 acres.
• 06Nearly 6 million acres have burned in Canada since the start of the fire season, which is less than a quarter of the land consumed during the 2023 wildfire events.
• 07Mark Parrington of the Copernicus Atmosphere Monitoring Service stated that smoke plumes from Canadian wildfires have the potential to travel across the North Atlantic towards Europe.
• 08Organizers of the World Cup final in East Rutherford, New Jersey, are monitoring smoke patterns ahead of the 3pm Sunday kick-off.
• 09A 2025 study by Carnegie Mellon University estimated that smoke from wildfires and prescribed burns caused $200 billion in health damages and were associated with 20,000 premature deaths in 2017.
• 10Lightning strikes in the Pacific Northwest ignited dozens of new wildfires in Oregon and Washington.

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Smoke from Canadian wildfires, particularly a 787,802-acre blaze in Ontario, has degraded air quality across 109 million people in the United States, with hazardous readings recorded in cities including Chicago and Detroit. Officials have issued health warnings and advised indoor precautions as forecasts indicate the smoke could drift toward Europe. The event occurs as tens of thousands of lightning strikes ignite new wildfires in the Pacific Northwest, compounding the regional air pollution crisis.