Record March Heat Wave Sweeps Across U.S. Southwest
Record March Heat Wave Sweeps Across U.S. Southwest
US · Published Mar 20, 2026
Record March temperatures in the U.S. Southwest reach 110°F (43.3°C) in Arizona, marking a new high.
Climate change significantly contributed to the heat wave, increasing temperatures by 4.7°F to 7.2°F (2.6°C to 4°C).
The heat wave poses risks to public health, agriculture, and ecosystems, highlighting the need for climate action.
Unprecedented March heat wave in U.S. Southwest
A historic heat wave is currently impacting the U.S. Southwest, with temperatures soaring to unprecedented levels in March. The Arizona desert recorded a staggering 110°F (43.3°C), the highest March temperature ever documented in the United States. This extreme weather is not an isolated occurrence but rather a symptom of increasingly frequent and severe weather events linked to global warming. Experts emphasize that such heat waves are becoming more common as the planet warms, with studies indicating that human-induced climate change has significantly contributed to the current temperatures, increasing them by 4.7°F to 7.2°F (2.6°C to 4°C).
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