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Clouds and smoke mingle in the skies over eastern Alaska and western Canada on July 17, 2004. This image from the Moderate Resolution Imaging Spectroradiometer (MODIS) on the Terra satellite shows locations of fires outlined in red.
Image courtesy the MODIS Rapid Response Team, NASA-Goddard Space Flight Center
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Smoke filled river valleys in northeastern Washington and parts of British Columbia.
Fires burning in boreal forests created hazy skies across North America in summer 2025.
Lightning likely ignited several large fires that sent smoke pouring over the Canadian province in early September 2025.
