{"entity":{"iso2":null,"iso3":null,"name":"St. Helens","slug":"st-helens"},"indicator":{"licence":"OECD Terms and Conditions (attribution required)","slug":"air-pollution-cities-and-fuas-population-exposure-to-pm2-5","source":"Organisation for Economic Co-operation and Development","source_url":"https://data-explorer.oecd.org/vis?df[ds]=dsDisseminateFinalDMZ&df[id]=DSD_FUA_ENV@DF_POLLUTION","title":"Air pollution - Cities and FUAs \u2014 Population exposure to PM2.5","unit":"Microgrammes per cubic metre"},"observations":[{"date":"2021-01-01","value":30.5009},{"date":"2022-01-01","value":29.0884},{"date":"2023-01-01","value":0.268982},{"date":"2024-01-01","value":26.0286},{"date":"2025-01-01","value":24.5499}],"summary":{"latest_period":"2025-01-01","latest_value":24.5499,"max":30.5009,"mean":22.0874,"min":0.268982,"of":1324,"rank":794,"trend":"volatile"}}