Smoky Skies

NASA

A Week of Smoky Skies Across North America

Play Video Wildland fire activity in Canada ramped up in July 2026, a time of year when lightning ignitions typically increase, according to a seasonal outlook published by several North American fire agencies. The blazes sent smoke plumes pouring across the U.S. and Canada, affecting air quality in both countries.   This animation tracks brown carbon, the organic aerosols emitted by fires…