Samoa · Urban PM2.5 Concentration (WHO)
6.12023
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 |
|---|---|---|---|---|---|
| Samoa | 2010 | 6.684303559 | 2.63636863 | 15.021200237 | — |
| Samoa | 2011 | 6.752484089 | 2.639085572 | 15.11527659 | — |
| Samoa | 2012 | 6.824812137 | 2.708034764 | 16.639961204 | — |
| Samoa | 2013 | 6.971132738 | 2.811963145 | 15.7197406 | — |
| Samoa | 2014 | 6.611599184 | 2.622837598 | 15.193483653 | — |
| Samoa | 2015 | 6.993659234 | 2.78228877 | 15.924515738 | — |
| Samoa | 2016 | 6.436009145 | 2.702432739 | 14.776081807 | — |
| Samoa | 2017 | 6.494974059 | 2.843459371 | 15.240479984 | — |
| Samoa | 2018 | 6.476178804 | 2.849695151 | 15.91129943 | — |
| Samoa | 2019 | 6.462433507 | 2.854529282 | 16.923405594 | — |
| Samoa | 2020 | 6.502767076 | 2.72883182 | 17.385961607 | — |
| Samoa | 2021 | 6.353284643 | 2.6591786 | 16.046185303 | — |
| Samoa | 2022 | 6.843018247 | 3.002840475 | 17.633786946 | — |
| Samoa | 2023 | 6.08661888 | 2.659051261 | 16.34354036 | — |
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.