{"entity":{"iso2":null,"iso3":null,"name":"Barcelona","slug":"barcelona"},"indicator":{"licence":"OECD Terms and Conditions (attribution required)","slug":"air-pollution-cities-and-fuas-population-exposure-to-nitrogen-dioxide","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 nitrogen dioxide","unit":"Microgrammes per cubic metre"},"observations":[{"date":"2021-01-01","value":66.4354},{"date":"2022-01-01","value":83.3435},{"date":"2023-01-01","value":0.165663},{"date":"2024-01-01","value":56.8145},{"date":"2025-01-01","value":43.239}],"summary":{"latest_period":"2025-01-01","latest_value":43.239,"max":83.3435,"mean":49.9996,"min":0.165663,"of":1324,"rank":320,"trend":"volatile"}}