Smoke from a Canadian wildfire moves into the United States, worsening air quality in several major cities, according to pollution tracker updates cited by multiple outlets. One report says Minneapolis, Detroit and Chicago rank among the most polluted cities, while another notes that Chicago and Detroit are the top two, with New York close behind.
IQAir’s air-quality monitoring is referenced in both summaries, indicating that residents in these cities face hazardous conditions as smoke spreads. The updates are reported for Thursday, including late-day timing in one account, suggesting deterioration during the day as concentrations rise.
While the outlets differ slightly in which cities are highlighted, they agree that Chicago and Detroit experience the worst air pollution among tracked cities and that other large cities, including New York, are also affected. Minneapolis is also mentioned as one of the affected places. The reports focus on the smoke’s impact on urban air quality rather than on fire activity itself, and they rely on tracker rankings to describe severity and relative pollution levels across locations.
