Canada wildfires: 81 million Americans under air quality alerts as blazes rage

<p>Hundreds of fires across Canada and parts of the US prompt alerts in 14 states from Great Lakes region to the north-east</p><p>Hundreds of <a href="https://www.theguardian.com/world/wildfires">wildfires</a> continued to burn across <a href="https://www.theguardian.com/world/canada">Canada</a> and parts of the US on Tuesday sending smoke from the blazes across the region and reducing air quality in both countries.</p><p>US air quality tanked from the Great Lakes region to the north-east, making skies hazy from Minneapolis to New York City and even prompting a ground stop at Boston’s Logan international airport due to “low visibility” on Monday. Detroit, <a href="https://www.theguardian.com/us-news/new-york">New York City</a> and <a href="https://www.theguardian.com/us-news/chicago">Chicago</a> continued to record some of the worst air quality in the world on Tuesday, according to <a href="https://www.iqair.com/">IQAir</a>, ranking fourth, 10th and 11th respectively.</p> <a href="https://www.theguardian.com/world/2025/aug/05/wildfires-canada-us-air-quality-alerts">Continue reading...</a>