Chad · Urban PM2.5 Concentration (WHO)
52.12023
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 |
|---|---|---|---|---|---|
| Chad | 2010 | 49.118593749 | 22.346282195 | 92.705224782 | — |
| Chad | 2011 | 50.921536475 | 23.245909702 | 95.153445821 | — |
| Chad | 2012 | 52.108183097 | 23.584428036 | 99.88949 | — |
| Chad | 2013 | 47.338182007 | 21.473631416 | 88.353407369 | — |
| Chad | 2014 | 48.551747585 | 21.596565041 | 90.761325356 | — |
| Chad | 2015 | 60.152631544 | 26.552087674 | 117.392676361 | — |
| Chad | 2016 | 56.966042577 | 25.370115738 | 110.009197108 | — |
| Chad | 2017 | 56.98545163 | 25.229806343 | 110.955038181 | — |
| Chad | 2018 | 52.885557203 | 23.507870879 | 100.423840501 | — |
| Chad | 2019 | 50.976757352 | 22.657699063 | 96.255501662 | — |
| Chad | 2020 | 51.453354016 | 22.79561394 | 97.569260247 | — |
| Chad | 2021 | 52.569162834 | 23.326236398 | 98.615755649 | — |
| Chad | 2022 | 53.983655943 | 24.112848285 | 102.07974875 | — |
| Chad | 2023 | 52.141912025 | 23.126146347 | 98.18211635 | — |
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.