Iran, Islamic Rep. · Urban PM2.5 Concentration (WHO)
33.12023
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 |
|---|---|---|---|---|---|
| Iran, Islamic Rep. | 2010 | 30.925780873 | 28.266932625 | 33.10540109 | — |
| Iran, Islamic Rep. | 2011 | 30.766353696 | 28.281241146 | 32.816563193 | — |
| Iran, Islamic Rep. | 2012 | 30.672302702 | 27.925878051 | 32.85442687 | — |
| Iran, Islamic Rep. | 2013 | 30.102378639 | 27.34525365 | 32.24193966 | — |
| Iran, Islamic Rep. | 2014 | 30.370305453 | 27.452759318 | 32.489258762 | — |
| Iran, Islamic Rep. | 2015 | 31.572739286 | 28.572593727 | 33.986531211 | — |
| Iran, Islamic Rep. | 2016 | 29.906608654 | 27.132764018 | 32.242574648 | — |
| Iran, Islamic Rep. | 2017 | 31.057009728 | 28.279293835 | 33.419718639 | — |
| Iran, Islamic Rep. | 2018 | 33.191886867 | 29.875432512 | 35.947730355 | — |
| Iran, Islamic Rep. | 2019 | 31.894917822 | 28.952768553 | 34.855889623 | — |
| Iran, Islamic Rep. | 2020 | 31.658699625 | 28.478629237 | 34.322061837 | — |
| Iran, Islamic Rep. | 2021 | 33.244998963 | 30.041360296 | 36.225145627 | — |
| Iran, Islamic Rep. | 2022 | 34.424055141 | 31.014515307 | 37.7119818 | — |
| Iran, Islamic Rep. | 2023 | 33.0524871 | 29.922746459 | 36.005268164 | — |
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.