The impact on vapour in the air was seen in the formation of a giant condensate hemisphere and an orange smoke cloud was sent high above the city. It left some fearing a nuclear blast had occurred.

People from San Francisco to Seattle woke Wednesday to hazy clouds of smoke ... Meanwhile, smoke particles above the marine layer were only allowing yellow-orange-red light to reach the surface ...

An curved arrow pointing right. New York City had the worst air pollution in the world on June 6 when smoke from Canada's wildfires covered the area. More from News New York City had the worst air ...