Wildfire Smoke and Heat Dome Intensify Across Northeast and Canada
Wildfire Smoke and Heat Dome Intensify Across Northeast and Canada
US · Published Jul 16, 2026
A heat dome is driving temperatures close to 100°F (37.8°C) across much of eastern Canada and the United States, while trapping wildfire smoke near the ground.
Nearly 100 million people from the Dakotas to New England are under 'major' or 'extreme' heat warnings issued by the National Weather Service.

Impact & Risks

The combination of extreme heat and wildfire smoke poses significant health risks, particularly for vulnerable populations such as the elderly, children, and those with respiratory conditions. Air quality is expected to deteriorate further, especially in areas downwind of the fires. Evacuations are underway in Minnesota, and the closure of recreational areas like the Boundary Waters Canoe Area impacts local tourism and outdoor activities. The fires remain uncontained, increasing the risk of further spread.

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