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Extreme heat is taking a toll on firefighters as wildfires stretch crews to the limit

<name>Julian L. Gallegos, Assistant Professor of Nursing, Purdue University</name> <foaf:homepage rdf:resource="https://theconversation.com/profiles/julian-l-gallegos-2596944"/>· 27 août 2026

Wildland firefighters light a backfire while battling a fire near Mariposa, Calif., in 2022. David McNew/AFP via Getty Images When a wildfire threatens a community, most people don’t think to ask whether the firefighters coming to help slept enough the night before, recovered from the previous day’…

Résumé

Firefighters under extreme pressure

The U.S.

wildfire response system is currently operating at its highest level of preparedness, known as Preparedness Level 5 (PL5), which has been in effect for weeks during summer 2026.

This means firefighting resources are fully committed, and some regions may require emergency staffing to meet demand.

In late August 2026, crews were battling over 90 large wildfires, with firefighters in the Southwest and Texas facing daytime temperatures exceeding 100°F (38°C).

The extreme heat, combined with physically demanding work such as cutting fire lines and clearing brush, is pushing firefighters to their limits.

The National Interagency Fire Center (NIFC) defines Preparedness Level 5 as a situation where firefighting resources are exhausted and additional support is needed to manage ongoing fires.

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