HG3 1AF - Flood, Heat, Air & Subsidence Risk - Hampsthwaite (HG3)

North Yorkshire, Hampsthwaite (HG3)

Climate risk summary for HG3 1AF

HG3 1AF in Hampsthwaite (HG3) has a Low flood risk - EA NaFRA2 data records 1 property in a flood risk zone. Heat risk is Lower, with a median (50th percentile) of 12 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 Sandstone geology; shrink-swell risk is classed as improbable (BGS GeoClimate).

• Flood: EA NaFRA2: 1 low flood risk properties in this postcode.
• Heat: Projected 12 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: Sandstone geology. Shrink-swell risk classed as improbable (British Geological Survey).
• Green space: 98% of households here have accessible green space within a 15-minute walk (the government's Environmental Improvement Plan standard), and 3% have a park or green space within a 200m walk of their door - below the England median (Defra, 2025).

What is the flood risk in HG3 1AF?

Flood risk at HG3 1AF is rated Low, based on Environment Agency NaFRA2 modelling.

Environment Agency flood zone data shows low flood risk for HG3 1AF in Hampsthwaite (HG3). EA NaFRA2 data shows 1 at low risk in this postcode. 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 HG3 1AF?

Air quality at HG3 1AF 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 HG3 1AF?

British Geological Survey data classes the underlying soil at HG3 1AF as 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 HG3 1AF draws on four official UK open data sources: Environment Agency NaFRA2 flood modelling, 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 North Yorkshire and is updated as new official datasets are published.

About the North Yorkshire area

North Yorkshire spans a vast and varied landscape of uplands, river valleys, moorland and coastal areas and experiences cool, wet winters and mild summers, shaped by elevation, exposure and distance from the coast.

What should buyers and renters check in HG3 1AF?

Practical check: EA flags just 1 property at flood risk here - check whether this one is among them via a formal flood search. These are postcode-level indicators - conditions vary between individual properties.

Climate risk can change street by street, so it is worth checking neighbouring postcodes too. The full risk report for HG3 1AA is at localrisk.co.uk/postcode/HG31AA, and you can compare HG3 1AF side by side with any UK postcode at localrisk.co.uk/compare.