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Being able to cook an egg over pavement on a hot, sunny day comes with a reason. During the day, concrete, blacktop, bricks, parking lots, pavement, and buildings all absorb and continue to hold heat, then emitting the heat back out. And with cities that have lots of pavement or numerous large buildings, it s not a surprise that metropolitan regions can experience higher temperatures than their rural match. (Photo : Getty Images) Urban Heat Islands  This isn t a dissimilarity of just a few degrees, in most cases. Neighborhoods found in cities that are highly developed can see mid-afternoon temperatures that are about 15 to 20 degrees greater than remote regions with more greenery and less development, as per the National Integrated Heat Health Information System (NIHHIS).

New yorkUnited statesNorth carolinaSan franciscoGeoff cornishAndrew pershingPublic health threatNational integrated heat health information systemGetty imagesHeat islandsClimate centralNew york cityNew orleansScorching summerUrban heatClimate science