Barcelona · 9.743 inhabitants · 3.018 buildings analysed one by one

CervellóClimate risk in its neighbourhoods, streets and rivers, today and in 2050

We have scored the climate risk of the 3.018 buildings in Cervelló using Cadastre data, satellite imagery and climate projections, and added it up by area, street and watercourse. The clearest change comes at night: from 21 to 66 tropical nights a year by 2050.

21→66tropical nights a year in a typical building, today and by 2050
87%of homes at high or very high wildfire risk by 2050
629homes less than 100 m from Riera de Cervelló
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

Cervelló compared with Spain

  • Tropical nights a year, 2050: 77 nights
    higher than 92 % of municipalities
  • Average summer maximum, 2050: 29,7 °C
    lower than 76 % of municipalities
  • Flood-prone area (100-year): 0,0%
    lower than 80 % of municipalities
  • Area burnt 2016-2026: 0,6%
    higher than 81 % 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 Cervelló

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

1

From 21 to 66 tropical nights a year

21→66 nights

In a typical building in Cervelló, nights when the temperature stays at or above 20 °C would rise from 21 a year (1991-2020) to about 66 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).

2

2.843 homes at very high wildfire risk

2.346 buildings

These are 2.346 buildings right next to vegetation that can burn. Of these, 8 are blocks of flats with 264 homes, where evacuation is harder.

  • Carrer de Joaquim Mensa: 70
  • Carrer de Josep Jové: 57
  • Carrer del Comerç: 36
  • Carrer de Coral Diana: 31

Proximity to woodland and to burnt areas (ESA WorldCover, EFFIS). It does not measure the state of the vegetation or any firebreaks.

3

Where there are fewer trees, 4,3 °C hotter

4,3 °C

Around homes with between 2 and 5 % tree cover, the surface in summer is 3,6 °C above the median for Cervelló; with more than 40 % tree cover, 0,7 °C below. 0 homes are in surroundings with almost no trees.

Ground surface temperature (Landsat), not air temperature. More trees usually go with less asphalt and lower density: this is a correlation, not a measure of the effect of planting trees.

4

Torrent de la Maladona: 190 homes less than 50 m away, with no official map

190 homes

Along Torrent de la Maladona (0,5 km within the municipality) there is no official mapped flood zone, but there are 190 homes less than 50 m from the watercourse.

Having no official map does not mean it cannot overflow: watercourses that are dry most of the year are the ones that cause the most surprises in a storm.

5

2 schools in heat islands

2 of 3

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 3.896 homes in Cervelló 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 2 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.
  • Firebreaks and evacuation routes in the streets that border woodland.
  • 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.
  • Keep the strip around your house clear of dry vegetation and know both ways out of your street.
  • 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