Image of “fire clouds” above the Line Fire in California on September 9. The smoke from this fire, as well as others in the area, is making the air quality dangerous for some people.

Wildfires generate vast plumes of smoke, which can reach the humid upper atmosphere, cool down and develop into clouds that can remain there for months, warming the air, drying out the earth and ...

A set of fires in Northern California paired with strong northerly winds is brining significant smoke to the region. 1 weather alerts 1 closings/delays. Watch Now.

Rare and mysterious clouds that are so bright they can be seen at night have mystified people since they were first observed more than a century ago, but scientists have now discovered a key ...

Satellite images show 60 per cent of Latin America’s largest country affected by smoke The sun sets in Brasilia, Brazil, amid smoke from forest fires in the northern and central western states ...