Smoke from Canadian Wildfires Blankets New England

In mid-July 2026, a massive plume of smoke from large wildfires burning across the Upper Midwest and south-central Canada was funneled by a high-pressure system and the jet stream directly over New England. The smoke turned skies a reddish-yellow hue, reduced visibility, and drove air-quality indices into the “unhealthy” range for Boston and surrounding communities.

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Meteorologist Ken Mahan explained that the timing of the plume was unusual: the smoke arrived “much earlier than expected” because a heat dome combined with favorable jet-stream positioning steered the emissions toward the region. He linked the increased frequency of such events to climate change, noting that hotter, drier conditions have lengthened and intensified Canada’s wildfire season. Recent heat and prolonged drought “geographically closer to New England” have also sparked fires nearer to the U.S. border, raising the likelihood of future smoke intrusions.

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• Boston has experienced three times as many poor-air-quality days from wildfire smoke in the past five years as it did during the two-decade period from 2000 to 2020.

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• The 2026 Canadian fire season ranks as the third most intense on record, trailing only 2023 and 2025.

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• Large wildfires have burned “hundreds of thousands of acres” rapidly, generating the smoke that now blankets New England.

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Mahan emphasized that while wildfires are a natural summer phenomenon, the convergence of high-altitude winds and a persistent jet stream created a “highway” that carried smoke straight into New England. He warned that as long as Canadian fires continue through their busiest season in August, “all it takes is the right wind pattern to send another plume our way.” The meteorologist cautioned that the region’s proximity to the source reduces travel distance, increasing the probability of additional smoky days this summer.

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• “It seems that wildfire smoke came out of nowhere and disrupted the region.” — Ken Mahan, Meteorologist

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• “We knew smoke was on the way, but the plume arrived much earlier than expected.” — Ken Mahan, Meteorologist

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• “We’re definitely seeing more smoke and poor air quality days than we did a decade or two ago.” — Ken Mahan, Meteorologist

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• “Climate change has delivered hotter, drier conditions, which in turn fuel longer, more intense wildfire seasons across parts of Canada.” — Ken Mahan, Meteorologist

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