{"data":{"postcode":"E15 2NE","geographic_basis":"grid_cell_containing_postcode_centroid","status":"available","grid_id":"538340-183680","modelled_year":2022,"no2_ugm3":22.73505,"pm25_ugm3":9.42229,"pm10_ugm3":16.08934,"reference_values":[{"pollutant":"NO2","averaging_period":"annual_mean","value_ugm3":40,"authority":"UK Government","reference_name":"Air Quality Standards Regulations limit value","source_url":"https://uk-air.defra.gov.uk/compliance-data"},{"pollutant":"PM2.5","averaging_period":"annual_mean","value_ugm3":20,"authority":"UK Government","reference_name":"Air Quality Standards Regulations limit value","source_url":"https://uk-air.defra.gov.uk/compliance-data"},{"pollutant":"PM10","averaging_period":"annual_mean","value_ugm3":40,"authority":"UK Government","reference_name":"Air Quality Standards Regulations limit value","source_url":"https://uk-air.defra.gov.uk/compliance-data"},{"pollutant":"NO2","averaging_period":"annual_mean","value_ugm3":10,"authority":"World Health Organization","reference_name":"WHO global air quality guideline 2021","source_url":"https://www.who.int/publications/i/item/9789240034228"},{"pollutant":"PM2.5","averaging_period":"annual_mean","value_ugm3":5,"authority":"World Health Organization","reference_name":"WHO global air quality guideline 2021","source_url":"https://www.who.int/publications/i/item/9789240034228"},{"pollutant":"PM10","averaging_period":"annual_mean","value_ugm3":15,"authority":"World Health Organization","reference_name":"WHO global air quality guideline 2021","source_url":"https://www.who.int/publications/i/item/9789240034228"}]},"sources":[{"slug":"onspd","name":"ONS Postcode Directory","publisher":"Office for National Statistics","source_url":"https://geoportal.statistics.gov.uk/search?categories=ons+postcode+directory","licence_name":"Open Government Licence v3.0","licence_url":"https://www.nationalarchives.gov.uk/doc/open-government-licence/version/3/","as_of":"2026-05","imported_at":"2026-08-07T21:25:53.291Z"},{"slug":"gla-laei-2022-concentrations","name":"London Atmospheric Emissions Inventory 2022 concentration grids","publisher":"Greater London Authority","source_url":"https://data.london.gov.uk/dataset/london-atmospheric-emissions-inventory-laei-2022-2lg5g","licence_name":"London Datastore Terms and Conditions","licence_url":"https://data.london.gov.uk/about/terms-and-conditions","as_of":"LAEI-2022-v1-2026-05","imported_at":"2026-08-30T18:56:35.720Z"}],"notices":["dataset_unavailable means that LAEI has no completed import; not_covered is used only after the model grid has been loaded.","Concentrations are LAEI 2022 model outputs for the 20 metre grid cell containing the ONS postcode centroid; they are annual model estimates, not live measurements.","UK limit values and WHO 2021 guideline values are supplied as separately cited facts. Civic Data does not add pass/fail flags, labels or a score.","The GLA states that it cannot warrant the quality or accuracy of London Datastore data."]}