Bulgaria · Urban PM2.5 Concentration (WHO)
13.72023
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 |
|---|---|---|---|---|---|
| Bulgaria | 2010 | 23.510218487 | 22.3902676 | 24.596541913 | — |
| Bulgaria | 2011 | 24.31574435 | 23.212505455 | 25.366323909 | — |
| Bulgaria | 2012 | 22.273861743 | 21.157072466 | 23.241554356 | — |
| Bulgaria | 2013 | 20.368854415 | 19.321370133 | 21.342449094 | — |
| Bulgaria | 2014 | 20.488203333 | 19.465134559 | 21.430701767 | — |
| Bulgaria | 2015 | 19.49769974 | 18.472603695 | 20.419233118 | — |
| Bulgaria | 2016 | 19.328318527 | 18.387894351 | 20.275092424 | — |
| Bulgaria | 2017 | 20.030689625 | 18.941210083 | 20.950558312 | — |
| Bulgaria | 2018 | 19.555262274 | 18.583391527 | 20.529870876 | — |
| Bulgaria | 2019 | 17.448321991 | 16.565931724 | 18.247186746 | — |
| Bulgaria | 2020 | 15.727392806 | 14.856305497 | 16.517451427 | — |
| Bulgaria | 2021 | 16.19798376 | 15.378717289 | 16.951625645 | — |
| Bulgaria | 2022 | 15.40555117 | 14.482506911 | 16.213969458 | — |
| Bulgaria | 2023 | 13.687368998 | 12.879996333 | 14.377895677 | — |
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.