Yemen, Rep. · Urban PM2.5 Concentration (WHO)
34.42023
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 |
|---|---|---|---|---|---|
| Yemen, Rep. | 2010 | 34.481379769 | 19.345801988 | 60.663747702 | — |
| Yemen, Rep. | 2011 | 36.687845153 | 20.534598799 | 65.881323504 | — |
| Yemen, Rep. | 2012 | 39.218622986 | 21.772224458 | 70.173965709 | — |
| Yemen, Rep. | 2013 | 36.938287222 | 20.633103851 | 65.795236001 | — |
| Yemen, Rep. | 2014 | 34.454003987 | 19.264309343 | 60.115788319 | — |
| Yemen, Rep. | 2015 | 37.541324767 | 20.959556472 | 65.653939238 | — |
| Yemen, Rep. | 2016 | 36.113672784 | 20.314858904 | 63.483045503 | — |
| Yemen, Rep. | 2017 | 37.599588285 | 21.119323035 | 66.741035942 | — |
| Yemen, Rep. | 2018 | 37.005145291 | 20.872379735 | 65.02734503 | — |
| Yemen, Rep. | 2019 | 36.391156707 | 20.218996043 | 64.70114033 | — |
| Yemen, Rep. | 2020 | 34.758323915 | 19.452890487 | 61.703149374 | — |
| Yemen, Rep. | 2021 | 35.615955544 | 19.902343336 | 63.335052636 | — |
| Yemen, Rep. | 2022 | 37.817807809 | 20.938100335 | 67.267127495 | — |
| Yemen, Rep. | 2023 | 34.373755522 | 19.139896867 | 60.307895991 | — |
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.