{"entity":{"iso2":"SL","iso3":"SLE","name":"Sierra Leone","slug":"sierra-leone"},"indicator":{"licence":"CC BY 4.0 (Our World in Data)","slug":"exposure-to-outdoor-air-pollution-in-urban-areas","source":"World Health Organization \u2013 processed by Our World in Data","source_url":"https://ourworldindata.org/grapher/exposure-to-outdoor-air-pollution-in-urban-areas","title":"Exposure to outdoor air pollution in urban areas","unit":"micrograms per cubic meter"},"observations":[{"date":"2010-01-01","value":31.26},{"date":"2011-01-01","value":33.65},{"date":"2012-01-01","value":36.93},{"date":"2013-01-01","value":32.97},{"date":"2014-01-01","value":35.36},{"date":"2015-01-01","value":38.28},{"date":"2016-01-01","value":36.09},{"date":"2017-01-01","value":36.3},{"date":"2018-01-01","value":35.93},{"date":"2019-01-01","value":35.48},{"date":"2020-01-01","value":35.99},{"date":"2021-01-01","value":34.65},{"date":"2022-01-01","value":35.47},{"date":"2023-01-01","value":36.9}],"summary":{"latest_period":"2023-01-01","latest_value":36.9,"max":38.28,"mean":35.3757,"min":31.26,"of":226,"rank":23,"trend":"rising"}}