Wildfire smoke can travel remarkable distances because of how fires interact with the atmosphere. Large wildfires generate powerful columns of hot air that lift smoke thousands of feet into the sky. Once there,

The blaze broke out on Mynydd Garnclochdy, between Abersychan and Blaenavon in Torfaen.

Smoke from Canadian wildfires continues to blanket parts of the Midwest, Great Lakes and Northeast.

All week long, wildfire smoke swirling to the east from Minnesota and Ontario has darkened skies, ruined outdoor plans and sent air quality plummeting for millions of people acros

While gradual improvement is forecast Monday as winds shift, smoke will likely continue to linger across the state."

Americans in several states in the Great Lakes and Northeast regions are facing unhealthy to hazardous air quality amid raging wildfires.

Satellites have captured images of billowing smoke from the Canadian wildfires.

Western Washington residents can expect hazy skies and the smell of wildfire smoke over the next several days as smoke from fires burning in Oregon and Canada drifts into the region.

Wildfires burning across Ontario have grown to 735,000 hectares (1.8 million acres), from 650,000 hectares over the weekend, Premier Doug Ford said