{"entity":{"iso2":"IR","iso3":"IRN","name":"Iran","slug":"iran-islamic-rep"},"indicator":{"licence":"CC BY 4.0 (Our World in Data)","slug":"pm-exposure-1990-2017","source":"Global Burden of Disease Study 2023, Institute for Health Metrics and Evaluation (IHME), via World Bank (2026) \u2013 processed by Our World in Data","source_url":"https://ourworldindata.org/grapher/pm-exposure-1990-2017","title":"Particulate matter exposure in 1990 vs. 2017","unit":"micrograms per cubic meter"},"observations":[{"date":"1990-01-01","value":33.7818},{"date":"1991-01-01","value":33.8676},{"date":"1992-01-01","value":34.1541},{"date":"1993-01-01","value":34.4405},{"date":"1994-01-01","value":34.727},{"date":"1995-01-01","value":34.6121},{"date":"1996-01-01","value":35.3},{"date":"1997-01-01","value":35.5864},{"date":"1998-01-01","value":35.8729},{"date":"1999-01-01","value":36.1594},{"date":"2000-01-01","value":36.6466},{"date":"2001-01-01","value":36.4724},{"date":"2002-01-01","value":35.3624},{"date":"2003-01-01","value":38.5541},{"date":"2004-01-01","value":34.9555},{"date":"2005-01-01","value":35.1402},{"date":"2006-01-01","value":38.4484},{"date":"2007-01-01","value":40.8847},{"date":"2008-01-01","value":42.104},{"date":"2009-01-01","value":42.9216},{"date":"2010-01-01","value":43.2837},{"date":"2011-01-01","value":42.4523},{"date":"2012-01-01","value":40.6184},{"date":"2013-01-01","value":39.7951},{"date":"2014-01-01","value":39.6403},{"date":"2015-01-01","value":40.7995},{"date":"2016-01-01","value":39.6507},{"date":"2017-01-01","value":40.0924},{"date":"2018-01-01","value":41.7864},{"date":"2019-01-01","value":39.3567},{"date":"2020-01-01","value":38.7645},{"date":"2021-01-01","value":41.0883},{"date":"2022-01-01","value":43.8957},{"date":"2023-01-01","value":40.2454}],"summary":{"latest_period":"2023-01-01","latest_value":40.2454,"max":43.8957,"mean":38.2783,"min":33.7818,"of":200,"rank":23,"trend":"rising"}}