Canadian Wildfire Smoke Triggers Widespread Air Quality Alerts Across US Midwest, Northeast

A widespread air quality advisory remains in effect across several U.S. states due to smoke from an extensive wildfire season in Canada, which has seen nearly 4,000 fires this year. Michigan, New York, Minnesota, and parts of New England are experiencing hazy skies and elevated fine particulate matter (PM 2.5) levels, prompting health warnings about potential respiratory irritation and advising vulnerable populations to limit outdoor activities. New York City and surrounding counties are under an Air Quality Health Advisory for the entire day, with particulate matter levels expected to exceed safe thresholds. Minnesota faces red AQI levels, denoting unhealthy air for all residents, with smoke expected to linger through the weekend before gradually clearing. The smoke's impact is causing reduced air quality, and officials recommend minimizing exposure both indoors and outdoors to mitigate health risks. Overall, these advisories highlight the transboundary effects of Canadian wildfires on U.S. air quality and public health.