Tool - Quick scan heat stress map

Link to external tool

Related to Aspects

Determine exposure, vulnerability and risk
Determine climate threat
Determine current baseline performance


The Quick scan heat stress map shows temperature differences within a city during a heat wave, air or comfort temperature (now and in 2050). The heat stress model gives a forecast of the local air temperature at about 1.5m above ground around 15:00 on a hot sunny afternoon during a (fictional) tropical day.


The model works with different map layers as input:
  • ·         BAG
  • ·         AHN2
  • ·
  • ·         Luchtfoto’s


This provides high resolution cards (up to street level). The maps show the local temperature with a qualitative scale (from much cooler to much warmer than outside the city). The perceived temperature is calculated from the air temperature, the radiant energy at each point, and an assumed wind speed and humidity appropriate for a hot summer day. Th etool provides a set of different maps that show the relative (so no absolute numbers) temperature differences in the municipality. It provides the effects of: Trees
  • Vegetation
  • water
  • Urbanization (Urban Heat Island Effect)
  • The heat stress card (the combined effect of the above effects) as relative temperature for the current situation and the situation in 2050
  It also provides maps of:
  • perceived temperature (PET) (current situation and 2050)
  • exceedance of set perceived temperature (PET) (current situation and 2050)
  • number of days of exceedance of perceived temperature (PET) (current situation and 2050)


The Heat stress map is developed and owned by Tauw, with contributions from Wageningen-Alterra and TNO.