Observed arrival · 2026-09-14
CoolEquity Maps Where Trees Could Cool People Most
An open heat-and-canopy mapping tool ranks neighborhood areas by tree-planting need across five California geographies.
Field notes
The tool offers five geographic builds, ranging from a county-wide view of 2,697 areas to smaller city and subregional maps at 0.04-square-mile resolution. Its inputs combine the USFS / CAL FIRE 2022 aerial canopy classification, Landsat 8/9 thermal readings, ACS population estimates, Census air-conditioning estimates, and OpenStreetMap walking routes. Heat is deliberately excluded from some regional scores when geography would confound heat with distance from the shore.
Observed signals
Read the marks
Editorial observations of this landing page, not a rating.
One card from the complete issue