Results of 2022 County ‘Urban Heat Island Mapping Campaign’ Document That Extreme Heat Has Greater Impact on Areas with Less Green Infrastructure

Per Montgomery County: The results of the 2022 Montgomery County “Urban Heat Island Mapping Campaign” document that neighborhoods with less green infrastructure and more concrete experienced temperatures up to 10 degrees higher than nearby cooler areas. The County’s Department of Environmental Protection (DEP) released the results of the campaign in partnership with the National Oceanic and Atmospheric Administration (NOAA) and Climate Adaptation Planning and Analyst (CAPA).

A StoryMap created by DEP provides a comprehensive overview of the campaign. Among its findings were that areas with low-income households and people of color have higher temperatures than other areas in Montgomery County due to a lack of green spaces and trees, indicating that extreme heat is a social justice issue.

The campaign brought together local organizations and volunteers to produce heat maps and generate creative and collaborative solutions for extreme heat in the area. The data will help Montgomery County identify areas where it can take action to protect vulnerable populations and build resilience against extreme heat risks.

The StoryMap provides an overview of the campaign’s methodology, results and solutions. The StoryMap highlights include the following:

  • Areas with low-income households and people of color were found to have higher temperatures than other areas in Montgomery County, indicating that extreme heat is a social justice issue.
  • Trees and green spaces play a crucial role in mitigating extreme heat, and the campaign identified areas with low tree canopy coverage that require additional green infrastructure.
  • The campaign engaged local residents and organizations in the data collection process, providing an opportunity for community members to actively participate in identifying solutions to extreme heat risks.

“The findings of the 2022 Urban Heat Island Mapping Campaign underscore the importance of community engagement in addressing the effects of climate change,” said County Executive Marc Elrich. “By working together, Montgomery County and its partners are taking proactive steps to build resilience and protect vulnerable populations from extreme heat.”

The StoryMap includes background information on extreme heat, the campaign day, media attention, response, and solutions. It also details the next steps DEP is taking to mitigate, adapt and build resiliency against extreme heat in the County.

The StoryMap can be viewed at

In addition, CAPA has released a summary report of the campaign’s findings that can be accessed at

For more information about Montgomery County’s efforts to address climate change, visit

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