Canada wildfires cause poor air quality in the midwest and northeast U.S. - NPR Topics: News

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People sun tan in grass off the Lakefront Trail on the North Side as a haze of Canadian wildfire smoke blankets the Chicago area and creates poor air quality, Thursday, July 31, 2025.

Health officials from Minnesota to Maine have issued alerts warning of poor air quality from wildfires burning in Canada. People are advised to limit outdoor exposure.

(Image credit: Ashlee Rezin/AP)