Mar 20 • 11:17 UTC 🇬🇧 UK Sky News

US suffers hottest March day ever recorded as heat dome drives up temperatures

The US experienced its hottest March day on record due to a heat dome pushing temperatures to dangerous levels in the southwest.

On March 20, 2026, preliminary readings from Arizona and southern California indicated that the United States faced the hottest March day on record, driven by an intense heatwave affecting the southwest. Temperatures soared to around 43°C (110°F) in various testing locations, while the extreme weather conditions are anticipated to spread eastward. The arrival of such hot weather months ahead of schedule has alarmed experts and residents alike. Experts attribute this unprecedented heat to the ongoing impacts of climate change, stating that the conditions would have been nearly impossible without human intervention. Climate scientist Andrew Weaver from the University of Victoria emphasized that this event is a stark illustration of how climate extremes have surpassed previously held boundaries of plausibility. The report released by World Weather Attribution reinforced the idea that climate change is making such extreme weather events more frequent and severe. As the heatwave persists, concerns grow over its implications for public health, agriculture, and overall ecological balance. Authorities may face challenges in managing the heat's effects, including increased energy demand and potential wildfires as conditions remain hot and dry. With climate scientists insisting that such incidents will only multiply without significant action on climate change, the urgency to address environmental issues has never been more pressing.

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