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Canadian wildfire smoke brings another wave of 'very unhealthy' air to the Midwest, East Coast | Grist
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Chicago air quality remains at unhealthy levels due to Canadian wildfires smoke; Alerts in effect in Illinois, Indiana, Wisconsin - ABC7 Chicago
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Chicago air quality unhealthy as Canadian wildfire emissions reach record levels and send smoke to Europe | The Independent
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Chicago air quality hits 'very unhealthy' category as Canadian wildfire smoke infiltrates Midwest - ABC News
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Over 122 million under air quality alerts from Chicago to DC as Canadian wildfire smoke pours into US
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Chicago air quality hits 'very unhealthy' category as Canadian wildfire smoke infiltrates Midwest - X101 Always Classic
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