Safety, air quality and noise in Ann Arbor

Safety — higher is safer

Ann Arbor scores 72 out of 100 for safety, where higher is safer.

Measured figure: 35.5 violent offences per 10,000 residents.

Safety uses a median of 35.5 violent offences per 10,000 residents across this area's Census tracts, each tract carrying the FBI-reported rate of its nearest reporting agency (3 agencies in all), from FBI Uniform Crime Reporting, latest published year, where each agency's rate is jurisdiction-wide, not a neighbourhood figure.

Median across the 87 member areas; middle half 0 to 72.

Clean air — higher is cleaner

Ann Arbor scores 53 out of 100 for clean air, where higher is cleaner.

Measured figure: 13.2 micrograms per cubic metre PM2.5 annual mean.

Clean air uses a median of 13.2 micrograms per cubic metre of PM2.5 across the 87 Tracts in this city, an annual mean modelled at 87 member-area centroids from the Copernicus CAMS regional background surface. This figure is approximate: a regional background estimate rather than a local modelled surface.

This score is approximate.

Median across the 87 member areas; middle half 53 to 54.

Quiet — higher is quieter

Ann Arbor scores 46 out of 100 for quiet, where higher is quieter.

Measured figure: 61.7 decibels (modelled).

Quiet uses a median of 61.7 decibels of modelled outdoor sound across the 87 Tracts in this city, a day-evening-night level taken at 87 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 87 member areas; middle half 34 to 58.