IMPACTS Extreme Heat in Our Cities

More than 27 million people live in the bustling metropolitan areas of the Northeast (including Boston, New York City, and Philadelphia), and everyone feels the heat when summer temperatures soar into the 90s. The number of days over 90°F is projected to increase until, by the end of the century, some cities could experience nearly an entire summer with temperatures greater than 90°F under a higher-emission scenario. These projections also show a dramatic increase in the currently few but blisteringly hot days over 100°F.

To see city-specific projections of extreme summer heat, click on one of the seven major Northeast cities listed to the right.

Reducing our heat-trapping emissions today and in the near term will help cut dangerously hot days significantly. Be sure to compare the striking difference between higher- and lower-emission pathways, which you'll find in the inset boxes accompanying each city-specific projection.