Suburban Area CLIMATE RISK
Trefechan is a suburb in Sir Ceredigion - Ceredigion, within Ceredigion council area. This page shows flood, heat, air quality, and subsidence risk data for Trefechan, drawn from official UK government sources.
Flood risk in Trefechan is rated Lower based on Environment Agency data for the Ceredigion area. Individual postcode flood risk can vary — check a specific address above for a postcode-level rating.
Heat risk in Trefechan is relatively low under current projections. Met Office UKCP18 data suggests around 8 days above 25°C per year in this area by the 2021-2040 period (central estimate, high emissions scenario). These are probabilistic projections — actual outcomes depend on future emissions levels. Properties in Trefechan without adequate ventilation or insulation may face increasing summer heat stress and higher cooling costs as temperatures rise.
Air quality in Trefechan averages 4.0 µg/m³ PM2.5, which is relatively low — meeting the WHO annual mean guideline of 5 µg/m³. Defra UK-AIR monitoring data underpins this figure. PM2.5 levels are typically higher near busy roads, industrial areas, and dense urban centres, and lower in parks, green corridors, and residential backstreets.
Subsidence data for Trefechan is sourced from the British Geological Survey GeoSure dataset, which maps clay shrink-swell risk across Great Britain. In areas with shrink-swell clay, foundations can shift as soils dry out in summer and re-wet in winter. Properties built before 1980 on clay-rich ground are most exposed. Check a specific postcode for Trefechan for a property-level subsidence risk band.
Anyone buying, renting, or advising on property in Trefechan can use LocalRisk to run a free climate risk check on any UK postcode. Each report covers flood risk (Environment Agency), heat projections (Met Office), air quality (Defra), subsidence (BGS), and coastal erosion where applicable — the same underlying datasets used by insurers, conveyancers, and local planning authorities. Use the postcode links above to check a specific address in Trefechan.
Council area level (Ceredigion). Search a postcode for detail.
Loading full area profile…