Liberia · Urban PM2.5 Concentration (WHO)
32.52023
Unit: micrograms per cubic metre. Publisher measure: Concentrations of fine particulate matter (PM2.5).
Annual population-weighted PM2.5 concentration in urban areas, matching WHO SDG11.6.2 metadata; label urban scope explicitly.
Measurement basis: model-based estimate.
Displayed values are rounded, with extra precision when needed to keep a positive estimate positive. Downloads retain the full numeric estimate and the publisher's original display text separately.
A “<” sign means strictly below the stated number. Numeric readings and uncertainty endpoints keep their own comparison signs. A number without a sign does not establish certainty or an observed outcome.
World Health Organization (Global Health Observatory); retrieved 2026-09-07. Retrieval time is separate from an official publisher release vintage.
Download this immutable source capture · Source and coverage corrections
One row per country, indicator and year, with raw values, source links and reuse notices. Thresholds have an empty numeric value and separate number/operator fields; value_kind distinguishes upper bounds from absent readings.
History and uncertainty
Charts plot numeric readings. Reported upper bounds create gaps; their values, uncertainty endpoints and source notes remain available in the table and downloads.
Reported estimates and uncertainty · 14 rows
Each comparison sign applies to its own reading or uncertainty endpoint. Values retain source precision. “Not reported” identifies an absent reading or uncertainty endpoint in this source capture.
| Country | Year | Reading | Lower endpoint | Upper endpoint | Publisher note |
|---|---|---|---|---|---|
| Liberia | 2010 | 26.339032878 | 15.161614271 | 45.578529856 | — |
| Liberia | 2011 | 28.820152728 | 16.260539389 | 50.221986638 | — |
| Liberia | 2012 | 30.540357962 | 16.917716318 | 53.90856871 | — |
| Liberia | 2013 | 27.680220557 | 15.927512089 | 48.022091815 | — |
| Liberia | 2014 | 28.767661957 | 16.312421138 | 50.586066249 | — |
| Liberia | 2015 | 34.435732925 | 18.224709802 | 62.533923678 | — |
| Liberia | 2016 | 31.773423345 | 17.48864817 | 57.127329987 | — |
| Liberia | 2017 | 30.768265612 | 17.242736052 | 56.12762288 | — |
| Liberia | 2018 | 30.390785583 | 17.060347649 | 55.031254278 | — |
| Liberia | 2019 | 30.549846664 | 17.114083068 | 55.425418095 | — |
| Liberia | 2020 | 31.447361366 | 17.419391051 | 56.546638047 | — |
| Liberia | 2021 | 29.183537417 | 16.486421434 | 52.945417268 | — |
| Liberia | 2022 | 30.60800813 | 17.097136961 | 55.254610267 | — |
| Liberia | 2023 | 32.542006619 | 17.978707926 | 59.626855442 | — |
One row per country, indicator and year, with raw values, source links and reuse notices. Thresholds have an empty numeric value and separate number/operator fields; value_kind distinguishes upper bounds from absent readings.