Citizen-scientists took to the streets on specially equipped bikes and cars to find out where it’s hottest—and where residents might be most vulnerable to extreme urban heat.
In late August 2018, volunteers took to the streets to map the hottest places in Washington, DC, and Baltimore.
A citizen scientist-led campaign to map the urban heat islands of D.C. and Baltimore found that some parts of those cities can be as much as 17°F hotter than other parts of the same city at the same time of day.
Use a slider to compare satellite images of Washington, DC, and Baltimore, MD, with maps of afternoon temperatures to see the hottest and coolest parts of the city on a late summer day.
The NIHHIS is an integrated system that builds understanding of the problem of extreme heat, defines demand for climate services that enhance societal resilience, develops science-based products and services from a sustained climate science research program, and improves capacity, communication, and societal understanding of the problem in order to reduce morbidity and mortality due to extreme heat. The NIHHIS is a jointly developed system by the Centers for Disease Control and Prevention (CDC) and the National Oceanic and Atmospheric Administration.