We have scored the climate risk of the 1.885 buildings in Sant Joan Despí using Cadastre data, satellite imagery and climate projections, and added it up by area, street and watercourse. The clearest change comes at night: from 55 to 94 tropical nights a year by 2050.
Level of the highest hazard in each 250 m area by 2050: flooding, heat, wildfire, wind or ground movement.
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 →
It comes from matching each building with its neighbourhood, its street, the nearest watercourse and its surroundings.
In a typical building in Sant Joan Despí, nights when the temperature stays at or above 20 °C would rise from 55 a year (1991-2020) to about 94 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).
They were built before the first thermal insulation standard (1979). With 94 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.
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.
The 14.211 homes in Sant Joan Despí by the level of their building. Tap a hazard to see it on the map.
The same data for all 8.217 municipalities in Spain. Choose what to compare with: municipalities of a similar size, the province, the region or the whole of Spain.
Compared with the 365 municipalities with between 20.000 and 100.000 inhabitants. The bar shows where Sant Joan Despí stands: further right means more risk.
| Indicator | Sant Joan Despí | Group median | Position |
|---|---|---|---|
| Tropical nights a year, today | 56 nights | 28 nights | higher than 78 % of them |
| Tropical nights a year, 2050 | 110 nights | 74 nights | higher than 78 % of them |
| Average summer maximum, 2050 | 29,9 °C | 32,0 °C | lower than 69 % of them |
| Night-time heat island | 2,1 °C | 0,7 °C | higher than 96 % of them |
| Flood-prone area (100-year) | 25,4% | 2,0% | higher than 94 % of them |
| Area burnt 2016-2026 | 0,0% | 0,0% | lower than 66 % of them |
| Water stress 2050 (0-5) | 3,3 | 4,9 | lower than 76 % of them |
| Maximum 50-year gust | 29 m/s | 29 m/s | higher than 54 % of them |
| Ground movement | −0,8 mm/yr | −0,7 mm/yr | sinking faster than 56 % of them |
| Population aged 65 or over | 19% | 19% | higher than 55 % of them |
Compared with the 311 municipalities in Barcelona province. The bar shows where Sant Joan Despí stands: further right means more risk.
| Indicator | Sant Joan Despí | Group median | Position |
|---|---|---|---|
| Tropical nights a year, today | 56 nights | 2 nights | higher than 95 % of them |
| Tropical nights a year, 2050 | 110 nights | 46 nights | higher than 94 % of them |
| Average summer maximum, 2050 | 29,9 °C | 30,9 °C | lower than 72 % of them |
| Night-time heat island | 2,1 °C | 0,3 °C | higher than 97 % of them |
| Flood-prone area (100-year) | 25,4% | 0,0% | higher than 98 % of them |
| Area burnt 2016-2026 | 0,0% | 0,0% | lower than 57 % of them |
| Water stress 2050 (0-5) | 3,3 | 4,1 | lower than 81 % of them |
| Maximum 50-year gust | 29 m/s | 27 m/s | higher than 83 % of them |
| Ground movement | −0,8 mm/yr | −0,4 mm/yr | sinking faster than 79 % of them |
| Population aged 65 or over | 19% | 20% | lower than 56 % of them |
Compared with the 948 municipalities in Catalonia. The bar shows where Sant Joan Despí stands: further right means more risk.
| Indicator | Sant Joan Despí | Group median | Position |
|---|---|---|---|
| Tropical nights a year, today | 56 nights | 5 nights | higher than 97 % of them |
| Tropical nights a year, 2050 | 110 nights | 51 nights | higher than 97 % of them |
| Average summer maximum, 2050 | 29,9 °C | 31,7 °C | lower than 78 % of them |
| Night-time heat island | 2,1 °C | 0,2 °C | higher than 98 % of them |
| Flood-prone area (100-year) | 25,4% | 0,2% | higher than 96 % of them |
| Area burnt 2016-2026 | 0,0% | 0,0% | lower than 59 % of them |
| Water stress 2050 (0-5) | 3,3 | 4,4 | lower than 76 % of them |
| Maximum 50-year gust | 29 m/s | 27 m/s | higher than 75 % of them |
| Ground movement | −0,8 mm/yr | −0,3 mm/yr | sinking faster than 83 % of them |
| Population aged 65 or over | 19% | 22% | lower than 73 % of them |
Compared with the 8.217 municipalities in Spain. The bar shows where Sant Joan Despí stands: further right means more risk.
| Indicator | Sant Joan Despí | Group median | Position |
|---|---|---|---|
| Tropical nights a year, today | 56 nights | 0 nights | higher than 97 % of them |
| Tropical nights a year, 2050 | 110 nights | 8 nights | higher than 97 % of them |
| Average summer maximum, 2050 | 29,9 °C | 32,4 °C | lower than 75 % of them |
| Night-time heat island | 2,1 °C | 0,1 °C | higher than 99 % of them |
| Flood-prone area (100-year) | 25,4% | 0,6% | higher than 97 % of them |
| Area burnt 2016-2026 | 0,0% | 0,0% | lower than 64 % of them |
| Water stress 2050 (0-5) | 3,3 | 4,6 | lower than 79 % of them |
| Maximum 50-year gust | 29 m/s | 31 m/s | lower than 64 % of them |
| Ground movement | −0,8 mm/yr | −0,4 mm/yr | sinking faster than 70 % of them |
| Population aged 65 or over | 19% | 28% | lower than 85 % of them |
Values for the municipality as a whole (median over built-up land). The position is the percentage of municipalities in the group with a lower value: it is not a probability of damage. 2050 = SSP3-7.0 scenario.
Semicolon-separated tables with a decimal comma, ready to open in a spreadsheet or a GIS (areas include longitude and latitude).
What this is and what it is not. It is a guide-only analysis made with public data and models, with the same rules for every municipality. It does not replace official maps, a technical study or emergency plans. For your own building, look up its report.
Building by building. We have scored the 1.885 Cadastre buildings in Sant Joan Despí with the same rules as each building’s report on Mi Riesgo Climático, from 0 to 100 for each hazard: low (up to 25), medium (up to 50), high (up to 75) and very high.
Aggregates only. To protect each owner, no individual building appears here: only 250 m areas with at least 3 buildings, and neighbourhoods and streets with at least 60 homes.
Wildfire and flooding. Wildfire counts proximity to woodland or scrubland of at least 100 ha (not urban parks or tree-lined streets). For flooding, besides the official flood zones, a building that was inside a real flood observed by satellite (Copernicus EMS, such as the 2024 DANA storm) is at least at high level.
2050. Average for 2041-2070 under an intermediate-to-high emissions scenario (SSP3-7.0). Tropical nights and heat change with the climate; flooding, wildfire, wind and ground movement are shown with current data when there is no projection.
Rivers and streams. Named watercourses from OpenStreetMap. We count the homes less than 50 and 100 m from the watercourse and, separately, how many of them are in an official flood zone (SNCZI). Being close does not mean they will flood, and having no official zone does not mean they cannot.
Neighbourhoods and streets. Neighbourhoods and districts from OpenStreetMap; streets according to the Cadastre address. The street heat index combines tropical nights in 2050 (35 %), heat island (30 %), lack of trees (20 %) and buildings from before 1980 (15 %).
Sources. Cadastre (buildings and addresses); ERA5 + CHELSA/CMIP6 MPI-ESM1-2-HR and AdapteCCa (tropical nights and temperature); Landsat 8/9 and MODIS (heat island); ESA WorldCover and EFFIS (wildfire); MITECO SNCZI (flood zones); JRC (coast); ERA5 + Global Wind Atlas (wind); Copernicus EGMS (ground movement); WRI Aqueduct (water); INE (population); OpenStreetMap, © contributors, ODbL (streets, neighbourhoods, rivers and facilities).