The parts of a city that look the hottest on a satellite map are often the coolest for people actually walking the street.
March 24, 2026
Original Paper
Are Activities Areas (LCZ8) really warmer than other parts of the city? Case Study in an old European city
SSRN · 6459619
The Takeaway
Urban planners rely heavily on satellite 'surface temperature' data, which shows industrial and retail zones as extreme heat spots. However, actual air temperature measurements show these areas are often cooler than residential centers because building spacing and wind patterns matter more for human comfort than the heat of the asphalt.
From the abstract
"Large Low Rise" Local Climate Zone 8 (LCZ 8) offers many urban variations from one country to another. Despite a marked presence in the spatial organization of our urban territories, and evidence of high occurrence of high surface temperature through satellite images, their local micro-climate in terms of air temperature is not yet explored in climatology studies. In Toulouse, among the weather stations in the large measurement network deployed in recent years on the whole agglomeration, 8 LCZ8