Summer Heat In
 
Up To
HOTTER IN THE CITY
THAN IN NEARBY
RURAL AREAS
Average
CITY SUMMERS ARE
HOTTER THAN IN
RURAL AREAS
0
MORE DAYS ABOVE
90° F EACH YEAR,
THAN RURAL AREAS
BIGGEST DIFFERENCE
BETWEEN URBAN AND
RURAL TEMPERATURES
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Hotter (choose city above) Temperatures
Mean More Air Polution

Hot summer city temperatures have serious health impacts, including heat stress during heat waves, and dangerous ground-level ozone levels on the hottest days of the year. Higher summer temperatures also stress the electricity grid as air conditioner use soars.

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Cities Are Hotter: Urban Heat Island

The roads, buildings, and infrastructure in urban areas make cities much hotter than rural areas, which often have more plants and trees. 57 of the 60 cities analyzed had measurable urban heat islands over the past 10 years. In the summer, temperatures can be as much as 15-27°F hotter in cities.

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Climate change is making urban heat islands worse

Summers in the city have been getting hotter, faster than in rural areas since 1970, as exemplified in 45 out of the 60 cities we analyzed. Hotter temperatures and urbanization are increasing risks for the 80% of Americans living in cities.

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