{
 "code": "LK.WEATHER.WDI.EN_ATM_PM25_MC_M3.A",
 "name": "PM2.5 air pollution, mean annual exposure (micrograms per cubic meter) (World Bank WDI)",
 "unit": "Microgram per cubic meter",
 "frequency": "Annual",
 "base_year": null,
 "producer": "World Bank",
 "publisher": "World Bank",
 "source_url": "https://data.worldbank.org/country/sri-lanka",
 "latest_vintage": "2026-10-08",
 "page": "/data/series/LK.WEATHER.WDI.EN_ATM_PM25_MC_M3.A/",
 "notice": "Compiled by Macro Lab; not an official publication of the source agency. Provided as is, without warranty of any kind. Not investment advice.",
 "licence": "Source: The World Bank. Licence: CC BY 4.0. https://creativecommons.org/licenses/by/4.0/",
 "observations": [
  {"period": "1990", "value": 34.10, "status": null},
  {"period": "1991", "value": 33.16, "status": null},
  {"period": "1992", "value": 33.08, "status": null},
  {"period": "1993", "value": 32.99, "status": null},
  {"period": "1994", "value": 32.90, "status": null},
  {"period": "1995", "value": 31.11, "status": null},
  {"period": "1996", "value": 32.73, "status": null},
  {"period": "1997", "value": 32.64, "status": null},
  {"period": "1998", "value": 32.55, "status": null},
  {"period": "1999", "value": 32.46, "status": null},
  {"period": "2000", "value": 33.23, "status": null},
  {"period": "2001", "value": 32.81, "status": null},
  {"period": "2002", "value": 31.82153, "status": null},
  {"period": "2003", "value": 31.40, "status": null},
  {"period": "2004", "value": 32.75, "status": null},
  {"period": "2005", "value": 32.80, "status": null},
  {"period": "2006", "value": 28.44, "status": null},
  {"period": "2007", "value": 26.34, "status": null},
  {"period": "2008", "value": 26.658842, "status": null},
  {"period": "2009", "value": 26.93, "status": null},
  {"period": "2010", "value": 27.41, "status": null},
  {"period": "2011", "value": 28.53, "status": null},
  {"period": "2012", "value": 26.25, "status": null},
  {"period": "2013", "value": 26.16, "status": null},
  {"period": "2014", "value": 25.01, "status": null},
  {"period": "2015", "value": 22.68, "status": null},
  {"period": "2016", "value": 24.670005, "status": null},
  {"period": "2017", "value": 24.32, "status": null},
  {"period": "2018", "value": 28.69, "status": null},
  {"period": "2019", "value": 24.00, "status": null},
  {"period": "2020", "value": 22.42, "status": null},
  {"period": "2021", "value": 21.46, "status": null},
  {"period": "2022", "value": 24.03, "status": null},
  {"period": "2023", "value": 22.68, "status": null}
 ]
}