{"id":15444,"date":"2025-09-24T15:59:31","date_gmt":"2025-09-24T13:59:31","guid":{"rendered":"https:\/\/themacs-engineering.com\/?p=15444"},"modified":"2025-09-25T10:31:24","modified_gmt":"2025-09-25T08:31:24","slug":"how-can-we-fight-against-urban-heat-islands-uhi","status":"publish","type":"post","link":"http:\/\/themacs-engineering.com\/en\/actualites-en\/how-can-we-fight-against-urban-heat-islands-uhi\/","title":{"rendered":"How can we fight against urban heat islands (UHI)?"},"content":{"rendered":"<p class=\"ai-optimize-6 ai-optimize-introduction\"><strong class=\"bold\">Urban heat islands<\/strong> (<strong class=\"bold\">UHI<\/strong>) result in a significant temperature difference between cities and surrounding rural areas, which can reach up to +10\u00b0C, especially at night. This phenomenon increases thermal discomfort, exacerbates health risks during heat waves, and increases energy consumption related to cooling buildings.\r\nThere are several ways to reduce their intensity:<\/p>\r\n&nbsp;\r\n<h2 class=\"ai-optimize-7\"><strong class=\"bold\">Increase the albedo of surfaces<\/strong><\/h2>\r\n&nbsp;\r\n<p class=\"ai-optimize-7\">A <strong class=\"bold\">high albedo<\/strong> means a greater ability to reflect solar radiation. However, in large cities, most infrastructure is built with dark materials.\r\nTo increase albedo, it is therefore necessary to use light-colored materials such as white roofs, reflective paints, or light-colored coatings for roads and sidewalks. This reduces heat absorption and lowers the temperature of buildings.<\/p>\r\n&nbsp;\r\n<h2 class=\"ai-optimize-8\"><strong class=\"bold\">Optimizing the emissivity of materials<\/strong><\/h2>\r\n&nbsp;\r\n<p class=\"ai-optimize-8\"><strong class=\"bold\">Emissivity<\/strong> is the ability of a surface to release absorbed heat in the form of infrared radiation.\r\nTo improve it, light-colored, reflective materials such as concrete or light-colored tiles should be used. This helps surfaces cool down in the evening and limits heat accumulation.<\/p>\r\n&nbsp;\r\n<h2 class=\"ai-optimize-10\"><strong class=\"bold\">Increasing greenery<\/strong><\/h2>\r\n&nbsp;\r\n<p class=\"ai-optimize-10\"><strong class=\"bold\">Vegetation<\/strong> acts as a natural heat regulator and helps improve air quality in cities.\r\nIt is therefore necessary to increase green spaces in urban areas, particularly near buildings and roads, by developing<strong class=\"bold\"> urban parks, tree-lined avenues, gardens, and green facades<\/strong>. These developments promote air circulation, provide shade, and reduce heat accumulation.<\/p>\r\n&nbsp;\r\n<h2 class=\"ai-optimize-11\"><strong class=\"bold\">Rethinking urban morphology (urban canyons)<\/strong><\/h2>\r\n&nbsp;\r\n<p class=\"ai-optimize-11\">Narrow streets lined with tall buildings trap heat and reduce air circulation.\r\nTo remedy this urban canyon effect, it is necessary to allow more space between buildings, create ventilation corridors, and vary the heights and orientations of buildings. This improves air circulation and limits heat trapping.<\/p>\r\n&nbsp;\r\n<h2 class=\"ai-optimize-12\"><strong class=\"bold\">Conclusion<\/strong><\/h2>\r\n&nbsp;\r\n<p class=\"ai-optimize-12\">The fight against urban heat islands relies on a combination of solutions: careful choice of materials, appropriate urban planning, and strengthening nature in the city.\r\nAt THEMACS Ing\u00e9nierie, we offer our expertise and measurement tools to help you design more resilient and comfortable cities.<\/p>","protected":false},"excerpt":{"rendered":"Urban heat islands (UHI) result in a significant temperature difference between cities and surrounding rural areas, which can reach up to +10\u00b0C, especially at night. This phenomenon increases thermal discomfort, exacerbates health risks during heat waves, and increases energy consumption related to cooling buildings. There are several ways to reduce their intensity: &nbsp; Increase the [&hellip;]","protected":false},"author":3,"featured_media":15488,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":"","_links_to":"","_links_to_target":""},"categories":[43],"tags":[],"class_list":["post-15444","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-actualites-en"],"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v25.2 (Yoast SEO v25.2) - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>How can we fight against urban heat islands (UHI)?<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"http:\/\/themacs-engineering.com\/en\/actualites-en\/how-can-we-fight-against-urban-heat-islands-uhi\/\" \/>\n<meta property=\"og:locale\" content=\"en_GB\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"How can we fight against urban heat islands (UHI)?\" \/>\n<meta property=\"og:description\" content=\"Urban heat islands (UHI) result in a significant temperature difference between cities and surrounding rural areas, which can reach up to +10\u00b0C, especially at night. This phenomenon increases thermal discomfort, exacerbates health risks during heat waves, and increases energy consumption related to cooling buildings. There are several ways to reduce their intensity: &nbsp; Increase the [&hellip;]\" \/>\n<meta property=\"og:url\" content=\"http:\/\/themacs-engineering.com\/en\/actualites-en\/how-can-we-fight-against-urban-heat-islands-uhi\/\" \/>\n<meta property=\"og:site_name\" content=\"Themacs Ing\u00e9nierie\" \/>\n<meta property=\"article:published_time\" content=\"2025-09-24T13:59:31+00:00\" \/>\n<meta property=\"article:modified_time\" content=\"2025-09-25T08:31:24+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/themacs-engineering.com\/wp-content\/uploads\/2025\/09\/im_0.jpg\" \/>\n\t<meta property=\"og:image:width\" content=\"320\" \/>\n\t<meta property=\"og:image:height\" content=\"256\" \/>\n\t<meta property=\"og:image:type\" content=\"image\/jpeg\" \/>\n<meta name=\"author\" content=\"monchau\" \/>\n<meta name=\"twitter:label1\" content=\"Written by\" \/>\n\t<meta name=\"twitter:data1\" content=\"monchau\" \/>\n\t<meta name=\"twitter:label2\" content=\"Estimated reading 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