LL20 7AE - Flood, Heat, Air & Subsidence Risk - Chirk

Wrexham, Chirk

Climate risk summary for LL20 7AE

LL20 7AE in Chirk has a Low flood risk. Heat risk is Lower, with a median (50th percentile) of 16 days above 25°C per year, averaged over the 2021-2040 period under the RCP8.5 high emissions scenario (Met Office UKCP18). Air quality is Low at PM2.5 5.5 μg/m³, above the WHO annual guideline of 5 μg/m³ (Defra UK-AIR). Ground conditions are Low risk, with Mudstone And Sandstone geology; shrink-swell risk is classed as improbable (BGS GeoClimate).

• Flood: Flooding is unlikely but local ponding can still occur.
• Heat: Projected 16 days above 25°C per year, 2021-2040 average (Met Office UKCP18, 50th percentile under RCP8.5, 12 km grid - postcodes within the same grid cell share this value).
• Air quality: PM2.5 5.5 µg/m³ - above the WHO annual guideline of 5 µg/m³ (Defra UK-AIR PCM model, council-level average - every postcode in this council shows this value).
• Ground: BGS data: Mudstone And Sandstone geology. Shrink-swell risk classed as improbable (British Geological Survey).

What is the flood risk in LL20 7AE?

Flood risk at LL20 7AE is rated Low, based on Natural Resources Wales flood mapping.

Natural Resources Wales flood zone data shows low flood risk for LL20 7AE in Chirk. The band reflects the highest flood risk within the postcode; some properties within this postcode may face little or no direct flood risk. For a specific property, a conveyancing search will confirm the exact flood zone position.

How is the air quality in LL20 7AE?

Air quality at LL20 7AE is rated Low, based on Defra UK-AIR annual mean PM2.5 data. Fine particulate matter (PM2.5) comes primarily from road traffic, industry, and domestic burning. Long-term exposure above the WHO guideline of 5 µg/m³ is linked to respiratory and cardiovascular health risks. Buyers and renters in higher air quality risk areas may wish to consider whether the property is near busy roads or industrial sources.

Is subsidence a risk at LL20 7AE?

British Geological Survey data classes the underlying soil at LL20 7AE as Mudstone And Sandstone, with shrink-swell hazard rated improbable (subsidence risk band: Low). A structural survey is the reliable way to assess ground conditions for a specific property.

Where does this data come from?

This LocalRisk report for LL20 7AE draws on four official UK open data sources: Natural Resources Wales flood mapping, Met Office UKCP18 climate projections, Defra UK-AIR PM2.5 monitoring, and British Geological Survey GeoClimate subsidence mapping. Risk ratings are a screening tool, complementing - not replacing - the searches and surveys ordered as part of a property transaction. Data covers Wrexham and is updated as new official datasets are published.

About the Wrexham area

Wrexham has an inland town and rural hinterland setting with former industrial land, river valleys and surrounding uplands and experiences cool, wet winters and mild summers, shaped by North Wales climate and varied terrain.

Climate risk can change street by street, so it is worth checking neighbouring postcodes too. The full risk report for LL20 7AA is at localrisk.co.uk/postcode/LL207AA, and you can compare LL20 7AE side by side with any UK postcode at localrisk.co.uk/compare.