Smoke from ongoing Canadian wildfires ENVIhave drifted to several parts of the US, including the Great Lakes region.
Currently, Detroit and Chicago are among the top three cities with the worst air quality in the world, per IQAir.
The thick smoke has caused hazy conditions with limited visibility and residents complained of a burning smell in the region and other parts of central and eastern US.
The smoke has even crossed the Atlantic, causing dark skies in southern Europe in countries like Spain and Portugal.
Currently, 490 fires are burning in Canada, with 255 of them classified as uncontrollable.