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April 21, 2026

Wildfires used to ‘go to sleep' at night. Climate change has them burning overtime

  • North American summer nights are warming faster than days, and evening relief is evaporating for forests.
    • By SETH BORENSTEIN
    AP Science Writer

    AP Photo/Noah Berger, File [enlarge]
    A firefighter battles the Pickett Fire burning in Napa County, Calif., last summer. Wildfires used to die down and even stop at night with cooler temperatures and increased humidity.

    WASHINGTON — Burning time for North American wildfires is going into overtime. Flames are lasting later into the night and starting earlier in the morning because human-caused climate change is extending the hotter and drier conditions that feed fires, a new study found.


     
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