# Climate Simulation API and Live Layer for Cities · infrared.city

> The climate intelligence layer for cities and buildings: wind, heat and sun at street level. API, SDK, plugins and a live layer for your digital climate twin.

Source: https://infrared.city/

**35.2 °C** Perceived heat (UTCI), hot spot
**32.5 °C** Cooler spot

**35.8 °C** Perceived heat (UTCI), hot spot
**30.8 °C** Cooler spot

Wind, heat, sun and daylight in seconds. From buildings to cities.

[Start for free ↗](https://platform.infrared.city/)
See it work

Wan Chai, Hong Kong · facade sun and street heat

## Plan , design and operate , from buildings to cities

One engine gives the same results at each step: the city plan, the building design and the daily operation.

1. [![Heat on the streets and roofs of central Barcelona, block by block](https://infrared.city/assets/stills/barcelona-heat-topdown.webp) 01 · Plan Plan districts and cities Find hot streets and windy corners across a whole city. Then set the rules for new projects.](https://infrared.city/solutions-cities)

2. [![Direct sun hours on the facades and ground of a tower design, Singapore tower study](https://infrared.city/assets/solutions/tower-study-sun.webp) 02 · Design Design better buildings Compare options for sun, daylight, wind and perceived heat (UTCI) while the design can still change. Example: Singapore tower study.](https://infrared.city/solutions-buildings)

3. [![Live layer for the City of Luleå: ice risk on every street, from the forecast](https://infrared.city/assets/stills/lulea-ice-satellite.webp) 03 · Operate Operate with a live layer A live layer for digital twins: the climate forecast for the next 72 hours, every hour, at metre scale. Example: ice on the streets of Luleå.](https://infrared.city/products-live)

## How it works

Example values · buildings illustrative · streets © OpenStreetMap contributors

## From a room to the whole city

Weather goes in. Your buildings, trees and streets shape the result, in seconds. Pick a tile, then point at the scene to read the value.

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Select a simulation to explore.

## Speed, measured end to end

~3 s

a 500 m site

~5 s

1 km²

37 s

100 km² of Hamburg

44 s

400 km² of Berlin

## Decisions teams make with infrared.city

Which tower option stays comfortable, when a site crew needs shade, which street trees cool a square. Each case runs on our simulations, and you can try it in your browser.

## Built by architects, engineers and scientists in Vienna

infrared.city started at the City Intelligence Lab of the Austrian Institute of Technology in Vienna. Our team turns years of simulation research into tools people use every day.

Live behind this text: the Hong Kong climate twin, sun hours on every facade, updated every hour. We prepare your city the same way.

[Meet the team](https://infrared.city/company#about) [The live layer →](https://infrared.city/products-live)

The live layer, a public demo with Hong Kong as the example. We prepare your city the same way.

## Start with a pilot on one site

Bring us a place, a workflow or a decision. We show you what the climate does there.