On August 7, 2020, 84 community services volunteers measured Harris County’s hottest and coolest places during a one-day heat mapping campaign. They captured temperature and humidity data across the region at three different times of day (6-7 a.m., 3-4 p.m., and 7-8 p.m.). 

The Houston Harris Heat Action Team (H3AT) used the data collected by the community volunteers to develop temperature maps of the region for those three times on August 7th. These maps have helped the City of Houston, Harris County, and its partners design projects and policies that address heat-related health issues across the region.  

32 Heat Mapping Areas
Each numbered shape in the map above represents a 10-square mile area where community volunteers measured temperatures and humidity along predetermined routes over the three separate one-hours periods mentioned above.   

The 2020 H3AT mapping campaign project was part of a larger initiative, Heat Watch, which was led by CAPA Strategies and supported by the National Oceanic and Atmospheric Administration’s (NOAA) Climate Program Office. The H3AT team was one of 13 communities selected to participate in the 2020 summer campaign.   

Logos for CAPA Strategies' Heat Watch program and the National Oceanic and Atmospheric Administration

2020 H3AT Mapping Project Team Organizers

Logos for project partners including Houston Advanced Research Center, City of Houston, Harris County Public Health, Resilient Houston, The Nature Conservancy, and the National Weather Service