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UN Warns of Powerful El Niño Driving Extreme Weather Into 2027

Sarah Kenilorea·September 4, 2026·2 min read

The United Nations has issued a warning that a very strong El Niño event is underway and will continue to affect global weather patterns until at least 2027, according to UN News. The agency reports that this climate phenomenon will bring an increased likelihood of severe droughts, flooding, and extreme heat across different regions of the world.

UN News, citing the World Meteorological Organization (WMO), states that the current El Niño is expected to reach a "very strong" intensity. This heightened strength raises the risk of extreme meteorological events persisting well into next year. The WMO has called for calm and preparedness, urging governments and communities to take preventive measures against the anticipated impacts.

The report also notes that the effects will not be limited to weather alone. According to coverage by El Financiero, researchers at Mexico's UNAM university have warned that the El Niño conditions could lead to more environmental contingencies in Mexico City, specifically citing the potential for poor air quality in 2027. Additionally, Reforma has reported on alerts regarding heatwaves as a direct consequence of this El Niño episode.

el niño

The combination of these factors points to a multi-year period of climate disruption. The UN's messaging emphasizes that this is not a short-term spike but a sustained event with far-reaching consequences for food security, water resources, and public health. The agency is urging international cooperation and local readiness to mitigate the worst outcomes.

What to watch next: How national governments and disaster management agencies adjust their preparedness plans for the prolonged period of extreme weather that UN News says lies ahead.

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