Heat Island Effect
Heat Islands and Equity – Updated!
Explore the reasons behind heat inequities and how communities can take action.
Climate Change and Heat Islands
Explore our recently updated webpage to understand the interactions between climate change and heat islands.
Community Cooling Examples
The Heat Island Reduction Program recently added dozens of new and updated examples.
Cool Your Community
Download social media graphics and messages to increase awareness of heat islands, share information on heat island cooling strategies, and encourage adoption of cooling strategies.
Heat islands are urbanized areas that experience higher temperatures than outlying areas. Structures such as buildings, roads, and other infrastructure absorb and re-emit the sun’s heat more than natural landscapes such as forests and water bodies. Urban areas, where these structures are highly concentrated and greenery is limited, become “islands” of higher temperatures relative to outlying areas. Daytime temperatures in urban areas are about 1–7°F higher than temperatures in outlying areas and nighttime temperatures are about 2-5°F higher. Find more information on the Learn About Heat Islands page.
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