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2023 Regional Campaign to Map Urban Heat Islands

Washington, Multnomah, and Clackamas Counties, along with our partners, are conducting a heat-mapping campaign this summer to identify urban heat islands in our region.

What is a heat-mapping campaign?

A heat-mapping campaign is a community science project that helps us better understand how neighborhoods experience different temperatures on hot days. This summer a heat-mapping campaign will be conducted across Clackamas, Multnomah, and Washington counties. Data collected by volunteers across the region will be used to develop a region-wide heat map.

Why are we leading a heat-mapping campaign?

We want to map temperatures across our neighborhoods to help identify urban heat islands. Urban heat islands are urban areas that experience very high temperatures on hot days compared to neighborhoods around them. Read more about urban heat islands. Hard surfaces like buildings and roads, limited plant life, traffic, and industrial activity make neighborhoods hotter overall. The urban heat island effect can create issues for human health, infrastructure, and quality of life. Understanding how temperatures vary based on qualities of the natural and built landscape will help us prepare for and reduce the impacts of rising summer temperatures across our region.

Heat mapping sensor fixed to outside of vehicle

How are we collecting data?

Data will be collected over a single day by volunteers using a sensor mounted to the passenger side of a car. The sensor records air temperature, humidity, and location once every second as volunteers drive the device along pre-planned street routes.

When will the campaign take place?

Our heat-mapping campaign will happen over a single day sometime in mid-July of 2023. We are working with the National Weather Service to decide the best day to collect data.

For media inquiries:

Multnomah County: Sarah Dean [email protected]

Washington County: Wendy Gordon [email protected]

Clackamas County: Bryan Hockaday [email protected]

Thank you to all our contributing partners!

Washington County logo

Logo for National Oceanic and Atmospheric Administration and the National Weather Service

Logo for Health Share of Oregon
Green mountains over blue water Multnomah County logo

Logo for City of Hillsboro

Logo for Clean Water Services

Logo for Pacific University
Logo for Clackamas County

Logo for City of Beaverton

Tualatin Hills Parks and Recreation District logo of text and brightly colored lines

Logo for CAPA Strategies Consultants