Luxembourg's biggest public holiday will unfold under a red heat alert, with forecasters warning of tropical nights and a felt temperature approaching 39C - a local reckoning with Europe's accelerating warming.
MeteoLux has active heat vigilance for 29-30 May as Luxembourg records an unusually early run of hot days. The new 2026 warning model focuses on perceived heat, duration and health risk.
Luxembourg has adopted a national climate adaptation strategy built on 152 measures across 17 policy areas, from water and biodiversity to health and urban planning. Minister Serge Wilmes presented the plan on 7 May 2026 after the Government Council approved it on 22 April. The strategy aims to ready the country for prolonged droughts, heatwaves and flooding.
Atmospheric microplastics and nanoplastics interact with sunlight and infrared radiation strongly enough to influence the climate system, according to a study published in Nature Communications on 4 May 2026. Their regional radiative forcing can exceed black carbon, the team reports.