The block matters more than the district
Heat islands are local: a dense, treeless street can be several degrees hotter than the park edge three blocks away. Check the map above for the exact address before a viewing.
Living · Topic
Heat load modelled from the official imperviousness layer (Copernicus) and capped by the climate series (GeoSphere), evaluated per 250 m cell · as of: August 2026
Summer heat is a location question. wohnwahn evaluated the heat load (modelled from the official imperviousness data) for every inhabited 250 m cell in St. Pölten, and the gap between districts is wide: Hafnerbach sits at a median heat load of 41/100, Unterwagram at 64/100.
And because a district is not an address: the map below shows the heat island, and the cool courtyard three blocks away.

Green means cool, red means heat island. Every square is an inhabited 250 m cell with its heat load, modelled from the official Copernicus imperviousness layer (there is no official heat map here).
Only inhabited cells are coloured, city and surroundings alike (the model covers both). Tap the map: the heat load for that exact spot.
Ranked by the median heat load of inhabited residential cells. Linked: the full district profile in the atlas.
Method: heat load modelled from the official Copernicus imperviousness layer (EEA, CC BY), one value per inhabited 250 m cell, clipped to the real district boundary. Honest caveat: even hot districts have cool courtyards and park edges; the map above shows the exact spot.
Heat islands are local: a dense, treeless street can be several degrees hotter than the park edge three blocks away. Check the map above for the exact address before a viewing.
Street trees and nearby water measurably cool their surroundings. Every wohnwahn listing shows the trees around the address and the water proximity of the location.
The flat itself decides the rest: an attic flat with west-facing windows heats up differently than a shaded courtyard flat. The sun check shows sun hours and shading for any address, per floor.
Hot locations stay warm at night, and nights are when heat hurts sleep. Cool spots with green buffers cool down faster after sunset. The heat load value reflects exactly that.
Each card shows the official heat load of its location, so you can compare honestly.
By the heat load per residential spot it is Hafnerbach: median heat value 41/100, ahead of Pyhra and Wilhelmsburg. Source: heat load modelled from the official Copernicus imperviousness layer, evaluated per 250 m cell.
Large. Hafnerbach sits at a median heat load of 41/100, Unterwagram at 64/100. Within a district the spread is just as real, which is why the map shows every single 250 m cell.
There is no official heat map for St. Pölten, so wohnwahn models the heat load from the official Copernicus imperviousness layer (EEA, 10 m): sealed ground is what heats up. The model is calibrated on 818 official Vienna cells and applied per inhabited 250 m cell and translates it into the words you see here (very low to very high).
Yes, measurably: vegetation and water cool their local surroundings through shade and evaporation. That’s why every listing on wohnwahn shows the street trees around the address and the water proximity of the location.
Heat is rising city-wide, so the honest question is which locations have a buffer. Cool spots with green and water cushion hot summers better than dense, sealed blocks. The heat map above is the best available official basis for that decision, and we refresh our evaluation monthly (as of August 2026).
More honest data on where to live well in St. Pölten and the surrounding area.
Use the climate-fit filter, tap any address on the map, and check trees, water and sun hours before the viewing. Free and independent.
How wohnwahn rates locations →Check sun & shade for any address →Quiet living →Commuting to Vienna →Green living →Living by the water →Family-friendly →
Sources: heat load modelled from the Copernicus imperviousness layer (EEA, CC BY), capped by the GeoSphere climate series · water: OpenStreetMap · transit: own routing on the LUP St. Pölten and ÖBB timetables. Refreshed monthly.