Air Quality Check
Check today's air quality at any UK property using the DAQI index. Important for families, asthma sufferers, and health-conscious buyers.
Powered by Homedata API — live air quality data for 29M+ UK properties
Access air quality, noise, and all environmental data via REST API
Air Quality FAQ
What is the DAQI index?
The Daily Air Quality Index (DAQI) is the UK government's standard air pollution scale, running from 1 (Low) to 10 (Very High). It combines readings for particulate matter (PM2.5, PM10), nitrogen dioxide (NO₂), ozone (O₃), and sulphur dioxide (SO₂). It is published daily by the UK Health Security Agency.[2]
Where is air quality worst in the UK?
Air quality tends to be poorest in central London, Birmingham, Manchester, and other major urban centres — particularly near busy roads and industrial areas. Rural areas generally have better air quality, though agricultural emissions can affect some rural locations.
Does air quality affect property value?
Research from LSE found that a 10% reduction in air pollution is associated with a 1.5% increase in house prices. Areas with Clean Air Zones (CAZ) are seeing gradual improvement. Air quality is increasingly a factor for health-conscious buyers, particularly families with young children or people with respiratory conditions.
Is this today's live air quality?
Yes — air quality data is updated daily and reflects current DAQI readings for the property's location. For a long-term picture, check the DEFRA Air Quality Statistics, which publish historical annual mean pollution data by area.[1]
Sources
Further reading
Integrate into your own product
Free to startToday's DAQI score (1–10) with recorded concentrations of NO₂, PM2.5, PM10, and O₃ measured against WHO air quality guideline limits — the precise scientific readings, not just a colour band.
Structured as JSON · queryable by UPRN or postcode · ready to embed in any application
Exact measurements
Real values — distances, concentrations, counts — not rounded ratings
29M+ UK properties
Every address queryable by UPRN or postcode
REST API
JSON responses, OpenAPI docs, sandbox — first call in under 5 minutes
Free tier: 100 API calls/month across all endpoints, no credit card required. Paid plans from £29/month for production use. Compare plans →
More free tools