Safety, air quality and noise in Winchester

Safety — higher is safer

Winchester scores 100 out of 100 for safety, where higher is safer.

Measured figure: 492.1 offences per 10,000 residents.

Safety uses a median of 492.1 offences per 10,000 residents across the 43 LSOAs in this local authority area, from Home Office police-recorded crime published through data.police.uk, 2025.

Median across the 43 member areas; middle half 96 to 100.

Clean air — higher is cleaner

Winchester scores 84 out of 100 for clean air, where higher is cleaner.

Measured figure: 6.5 micrograms per cubic metre PM2.5 annual mean.

Clean air uses a median of 6.5 micrograms per cubic metre of PM2.5 across the 43 LSOAs in this local authority area, an annual mean modelled at 43 member-area centroids from SpotCheck's city air-quality model.

Median across the 43 member areas; middle half 67 to 84.

Quiet — higher is quieter

Winchester scores 54 out of 100 for quiet, where higher is quieter.

Measured figure: 58.3 decibels (modelled).

Quiet uses a median of 58.3 decibels of modelled outdoor sound across the 43 LSOAs in this local authority area, a day-evening-night level taken at 43 member-area centroids from the national major-road traffic noise model, where a lower reading means a quieter area. This figure is approximate: modelled from the major-road network rather than a local noise surface.

This score is approximate.

Median across the 43 member areas; middle half 49 to 63.