Cities are getting hotter, and the apps we navigate them with have no idea. They'll send a pedestrian down a sun-baked, shadeless road with the same confidence as a shaded park path — because “fastest” is the only thing they optimize for. CoolRoute adds the missing variable: how much heat you'll actually walk or ride through.
Step 1
Set a start and an end — on foot, bike, or by car.
Step 2
Free routing infrastructure returns 2–3 real paths between them.
Step 3
FortyGuard's hyperlocal Temperature API measures conditions along each path.
Step 4
Each route is scored by heat exposure and the pick is explained in plain English.
is a typical gap between two routes that look identical on an ordinary map — one hugging shade and green space, the other running straight down an open, sun-baked avenue. That gap is invisible until you measure it. CoolRoute measures it.
Deciding how to get somewhere on foot without walking straight into the worst of the heat.
Planning routes during peak heat hours, where the wrong street can mean real risk.
Spotting which streets and corridors most need shade or cooling infrastructure.
Every piece of this runs free. Routing and heat sampling need no paid key at all, and route scoring works out of the box with a local heuristic — Claude is a drop-in upgrade for richer, plain-English explanations, not a requirement to run the app.
Try CoolRoute