Estimates, not statistics
Italy has no public neighbourhood-level crime dataset today: scores are indicative estimates, not official figures.
Transparency first
An index is only useful
if it's explained.
Quartio does not predict whether something will happen. It offers relative guidance built from public data and urban context.
Current formula
How the score is built
For each neighbourhood and time slot
Day/night base index, estimated from public sources
A qualitative estimate, separate for day and night: Italy has no public neighbourhood-level crime dataset today.
70–100Calm
50–69Caution
0–49Risky
Current status: base scores are initial estimates, not official figures. There is currently no public, up-to-date open dataset of crimes at neighbourhood level. That's why we never use news articles to change the numbers automatically.
Uneven coverage
Some areas are better documented than others; data quality varies from neighbourhood to neighbourhood.
Heterogeneous sources
Periods, geographic scales and definitions vary. Each source keeps its own role and is never merged without stated criteria.
OSINT source registry
Where we start from
Official dataNIL boundaries · City of MilanOfficial boundaries of the Local Identity Units (PGT 2030). Geographic base, not a crime measure.Official dataReported crimes · Ministry of the InteriorAnnual statistics at city/province level. They do not allow an up-to-date comparison between neighbourhoods.Official dataVictimisation surveys · ISTATEstimates of crimes suffered, not always reported, useful as national and regional context.Institutional contextHeightened-surveillance areas · Prefecture of MilanTemporary measures and operational results. Contextual signals, not a stable ranking.Historical researchHot spot analysis · TranscrimeGeo-referenced study useful for method, but based on past years and not suited to describe the current situation.Context dataPublic lighting · City of MilanEnvironmental indicator for reading the night-time context, never treated as crime data.News coverageMilan crime news · ANSA LombardiaRecent news consulted to identify issues worth investigating. Not directly part of the numeric calculation.
What about the news?
Authoritative local news can highlight issues or places to investigate. We treat it as a qualitative, dated and attributed signal: never as standalone proof nor as a direct score multiplier.