Independent evidence, designed to be examined.
AQ26 turns current official air-quality measurements into a transparent weekly evidence briefing. This release was generated 15 July 2026 · 22:53 UTC.
The observatory separates acquisition, quality control, statistical screening, source context and scientific interpretation so that uncertainty remains visible rather than hidden.
Measurement coverage
Fresh physical monitoring sites137 / 149
Resolved UK monitoring locations inside the freshness window · 92%
Fresh PM time series254 / 283
PM2.5 and PM10 streams with recent usable observations · 90%
Screening snapshot
Signals are departures from a recent baseline and remain preliminary. They are not legal exceedances, source findings or health determinations.
Location context
20 configured UK locations, kept separate from source findings
The map is a navigation and provenance layer. Locations are introduced after data-led discovery and are not treated as evidence of contribution merely because they are nearby.
Current measurements
Inspect official PM2.5 and PM10 coverage, data-quality exclusions, screening observations and cross-source execution in one public dashboard.
Explore current dataWeekly evidence briefing
Read a public summary organised around what changed, what was checked, what remains uncertain and what evidence is required next.
Open the latest briefingMethod and provenance
Review acquisition, quality control, statistical screening, evidence linkage and hard claim boundaries in reproducible detail.
Review methodology