01
Enter your destination
Choose where you are walking. HeatRoute reads the current street-level temperature grid along every candidate path.
Navigate the city.Not the heat.
HeatRoute compares walking routes using hyperlocal temperature data and recommends the one with less high-heat exposure — without adding an unreasonable amount of time to your walk.
2 m
TEMPERATURE RESOLUTION
Walking
PURPOSE-BUILT MODE
12 h
FORECAST HORIZON
Private
BY DESIGN
The problem
Two streets apart, the city can be a different climate.
City temperature is not one number. Shade, tree cover, surface material and building geometry create street-level differences of several degrees within a single block. Every navigation app still routes you as if heat did not exist — straight down the hottest, most exposed corridor.
The fastest route is often the hottest
Wide, unshaded avenues move you quickly and expose you the most.
Exposure is what harms you, not distance
Minutes spent above a high-heat threshold is the number that matters.
Small detours change the outcome
A few extra minutes on shaded segments can cut exposure substantially.
CoolerHotter
How it works
Transparent route intelligence, in three steps.
02
Compare the tradeoff
See fastest and heat-safe side by side: duration, distance, peak and average temperature, and minutes of high-heat exposure.
03
Walk the cooler route
Start simplified navigation with live heat context, and get offered a cooler alternative if conditions change en route.
The decision
You see the tradeoff, then you choose.
HeatRoute never hides its reasoning behind a single opaque score. Every recommendation shows the exposure it saves, the time it costs, and why it was selected.
See it on the mapFastest
17 min
Walk time
1.2 km
Distance
39.4°C
Peak temp
11 min
High heat
Heat-SafeRecommended
20 min
Walk time
1.4 km
Distance
34.8°C
Peak temp
4 min
High heat
Example comparison. Live values come from street-level temperature intelligence.
Powered by FortyGuard
The temperature layer beneath every route.
FortyGuard provides hyperlocal, street-level temperature intelligence at roughly 2-metre resolution, plus short-horizon forecasts. HeatRoute turns that layer into a routing decision: it scores each candidate walking path segment by segment, estimates minutes of high-heat exposure, and recommends the coolest option that stays within an acceptable travel-time penalty.
Street-level
Not city-wide averages
Segment scoring
Exposure per path segment
12-hour forecast
Leave now or leave later
Explainable
No unexplained score
Your next walk can be several degrees cooler.
Enter a destination and see the heat tradeoff before you step outside.
Try HeatRoute