Extreme Heat Grips Southwest US and Nebraska

Record-breaking temperatures force hikers off trails and raise wildfire risks.

Mar. 23, 2026 at 2:03am

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Parts of California, Arizona, and even Nebraska are experiencing extreme heat just a day into spring, with temperatures reaching over 100 degrees Fahrenheit. Experts say the heat is likely to break long-standing records and is a result of human-caused climate change. Hikers in Arizona have had to cut their trips short due to the lack of shade and drying water sources, while the heat has also led to a higher risk of wildfires in the region.

Why it matters

The extreme heat in the Southwest and Midwest is a concerning sign of the impacts of climate change, with temperatures typically not reaching these levels until later in the spring or summer. The heat poses risks to public safety, outdoor recreation, and the potential for devastating wildfires, underscoring the need for communities to prepare for and adapt to the effects of a warming climate.

The details

Temperatures in parts of California, Arizona, and Nebraska reached or exceeded 100 degrees Fahrenheit on Saturday, with the Yuma Desert in Arizona hitting a record high of 112 degrees on Friday. Hikers in Arizona had to cut their trips short due to the lack of shade and drying water sources, while the heat also led to a red flag warning for higher wildfire risk in parts of Nebraska and Texas.

  • On Friday, the Yuma Desert in Arizona reached 112 degrees, setting a new record for the highest March temperature in the United States.
  • On Saturday, temperatures were forecast to reach 100 degrees or higher in parts of California, Arizona, and Nebraska.

The players

Sam Weller

A City of Phoenix Park Ranger who directed hikers away from a trailhead closed due to extreme heat at Camelback Mountain.

Win Marsh

A 63-year-old hiker who, along with her husband Stephen, had to cut short their 800-mile hike on the Arizona Trail due to the extreme heat.

National Weather Service

The government agency that issued extreme heat warnings and forecasts for the affected regions.

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What they’re saying

“We know our limits. We can't hike when our bodies can't cool down. There's no shade out there, and water sources are drying up. … We promised our kids we wouldn't do sketchy stuff. We're not out there for a search-and-rescue event.”

— Win Marsh, Hiker

“This heat is likely to break many long-standing records from over a century ago across the area.”

— National Weather Service in Omaha, Nebraska

What’s next

The National Weather Service is closely monitoring the situation and has issued warnings for the affected areas. Authorities are urging residents and visitors to take precautions against the extreme heat, such as staying hydrated, limiting outdoor activities, and checking on vulnerable populations.

The takeaway

The extreme heat gripping the Southwest and parts of the Midwest is a stark reminder of the impacts of climate change, with record-breaking temperatures arriving much earlier in the year than usual. This event underscores the need for communities to prepare for and adapt to the effects of a warming climate, which can pose serious risks to public safety, outdoor recreation, and the environment.