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Portland Metro Region Heat Mapping Campaign

Take a look at our tri-county project mapping the differences in temperatures between our neighborhoods on a hot day.
Two volunteers attach a heat sensor to their car window

On July 22, 2023, more than 100 people from Clackamas, Multnomah and Washington counties volunteered to measure temperatures in our neighborhoods. Special equipment on their car windows allowed them to collect thousands of air temperature measurements in one day. The result of this project is a new tool we can use to see how heat affects our communities differently. Use the new heat-mapping tool.

Climate change is bringing warmer temperatures to Oregon. During heat waves, some neighborhoods are getting much hotter than others. Heat can cause serious illness or even death. Understanding which areas get the hottest can help us in our work to protect health and save lives in our community. This tool is one of many that can help government agencies, businesses, and community organizations, prepare for extreme heat. 

For more information on how you can stay safe during heat waves, go to our Hot Weather page. To learn more about the health effects of extreme heat in Washington County, go to our Local Climate and Health Information page and read our new Washington County Summer Heat and Population Health report. 

Read the full report
Read a summary of the report with tips for staying safe in the heat

Report summaries in Arabic, Chinese (Simplified and Traditional), Farsi, Japanese, Korean, Khmer, Russian, Tagalog, Ukrainian, and Vietnamese are coming soon.

This project was led by Clackamas, Multnomah, and Washington County staff, along with our community partners, and our consultant, CAPA Strategies. Thank you to all who participated in making this campaign a success! 

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


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