Barcelona · 289.510 inhabitants · 10.429 buildings analysed one by one

L'Hospitalet de LlobregatClimate risk in its neighbourhoods, streets and rivers, today and in 2050

We have scored the climate risk of the 10.429 buildings in L'Hospitalet de Llobregat using Cadastre data, satellite imagery and climate projections, and added it up by area, neighbourhood, street and watercourse. The clearest change comes at night: from 72 to 109 tropical nights a year by 2050.

72→109tropical nights a year in a typical building, today and by 2050
1%of homes at high or very high flood risk by 2050
4.888homes in the official flood zone (500 years)
At a glance

Where the risk lies by 2050

LowMediumHighVery highRivers and streams

Level of the highest hazard in each 250 m area by 2050: flooding, heat, wildfire, wind or ground movement.

Tropical nights a year in a typical building

L'Hospitalet de Llobregat compared with Spain

  • Tropical nights a year, 2050: 129 nights
    higher than 100 % of municipalities
  • Average summer maximum, 2050: 29,2 °C
    lower than 79 % of municipalities
  • Flood-prone area (100-year): 3,9%
    higher than 78 % of municipalities
  • Area burnt 2016-2026: 0,0%
    lower than 64 % of municipalities
  • Water stress 2050 (0-5): 3,3
    lower than 77 % of municipalities

Position among the 8.217 municipalities: further right means more risk. These are figures for the municipality as a whole, the same for everyone; they may differ from those for the typical building. Compare with others →

What stands out

What we found in L'Hospitalet de Llobregat

It comes from matching each building with its neighbourhood, its street, the nearest watercourse and its surroundings.

1

4.888 homes in a flood zone

4.888 homes

They are in the area that can flood once every 500 years according to the official maps (SNCZI); 0 of them are in the 100-year area.

According to the Ministry’s studies, this is an annual probability of 0,2 % (500 years) or 1 % (100 years), not “once every 500 years”: it can happen two years in a row. Small gullies are not always mapped.

2

From 72 to 109 tropical nights a year

72→109 nights

In a typical building in L'Hospitalet de Llobregat, nights when the temperature stays at or above 20 °C would rise from 72 a year (1991-2020) to about 109 by 2050. For this reason, 100 % of homes would be at a high or very high level.

Median of the buildings. Intermediate-to-high emissions scenario (SSP3-7.0).

3

82 in every 100 buildings were built before 1980

82 %

They were built before the first thermal insulation standard (1979). With 109 tropical nights a year by 2050, they will hold the most heat at night and have the most to gain from a retrofit.

Year of construction from the Cadastre.

4

4 schools, care homes or health centres in a flood zone

4 facilities

They are in the official 500-year flood zone or in a preferential flow zone. They are the first to review in an emergency plan: who is inside, how to get out and whether they use the ground floor.

  • School: Institut Mercè Rodoreda
  • School: Escola Patufet Sant Jordi - Francesc Batallé i Aragonès
  • School: Escola Ramon Muntaner
  • School: Jesuïtes Bellvitge - Centre d'Estudis Joan XXIII

OpenStreetMap location matched to the nearest Cadastre building.

5

11 schools in heat islands

11 of 79

Schools whose surroundings are at least 1 °C hotter than the municipal median in summer. They are the first candidates for shade and tree-lined playgrounds.

Ground surface temperature (Landsat) around the building closest to the OpenStreetMap point.

Six hazards

How many homes are at high risk, today and in 2050

The 107.783 homes in L'Hospitalet de Llobregat by the level of their building. Tap a hazard to see it on the map.

LowMediumHighVery high
What can be done

For the town council and for residents

For the town council and its technical staff

  • Climate shelters, and late-afternoon and evening opening hours at libraries and community centres in the areas with the most tropical nights.
  • Shade and trees in the playgrounds of the 11 schools with the hottest surroundings.
  • Review with the river basin authority the watercourses with no official mapping that run next to homes, and keep them clear.
  • Emergency self-protection plans in the schools, care homes and health centres that are in a flood zone.
  • Download the tables by area, neighbourhood, street and watercourse (Data tab) to cross-check them with urban planning.

For residents

  • Air your home in the early hours, shade west-facing walls from the sun and ask about grants to insulate the roof.
  • If you live on a ground floor or have a garage next to a watercourse, have a plan: where to go upstairs, what to switch off and how to hear about warnings.
  • Look up your building: the free report gives its level for each hazard, and the Climate Note gives the full detail.

Look up your building