I feel like someone should develop "Vampire routing" mode more widely. We need trees and building heights recorded more comprehensively in #OpenStreetMap
https://sosm.ch/the-coolest-way-to-find-shady-paths-vampire-routing-on-routing-osm-ch/
The coolest way to find shaded paths: Vampire routing on routing.osm.ch | Swiss OpenStreetMap Association

Introducing the technology behind heat-avoiding routing: How a Heidelberg research initiative became a nationally scalable open-source tool – HeiGIT

@milh0use The main limitation would be field elevation data quality/availability.