luftdaten.info / Sensor.Community citizen air sensors
This overview was generated with AI from the public sources listed below and checked against them before publication. It has not had a complete human fact-check — treat it as a starting point and follow the sources.
How this atlas is made · What “last verified” means · What “source-checked” means · The full record behind this page
Stuttgart's OK Lab — part of Code for Germany — launched luftdaten.info in 2015 so residents could measure the city's notorious particulate pollution themselves, using cheap DIY kits built around the SDS011 dust sensor. Renamed Sensor.Community in 2019, the open-data network has since spread to tens of thousands of citizen-built sensors across more than 70 countries.
what does this mean?
The strongest source behind this entry is an independent peer-reviewed or academic study. It grades who did the looking — not how well the project went. All four grades →📊 Impact
Baden-Württemberg's state environment agency LUBW ran comparison measurements of the SDS011 against a certified reference analyser in 2017, and a peer-reviewed Stuttgart evaluation followed — independent testing found the low-cost sensors reliable enough for indicative particulate-matter mapping.
🎓 Lesson
A cheap, replicable DIY sensor plus open data turned a local air-pollution grievance into one of the world's largest citizen environmental-monitoring networks.
Sources
📅 How old is the evidence?
Two clocks, kept apart: when this entry’s sources were published, and what has happened to its record in the atlas. Documented span: since 2015. 3 of 5 sources carry a publication date, from 29 May 2018 to 2022.
When the sources were published
- Sensor.Community (luftdaten.info) · communityluftdaten.info — Evaluation (operator)
- Weser-Kurier · pressWeser-Kurier — how citizens build the sensors (press)
- Springer · researchEvaluation of Crowd-Sourced PM2.5 Measurements ... Stuttgart City (peer-reviewed)
Show your work What this page rests on and what it can’t tell you · all 1 claims with their sources · the forensic record
Evidence Passport · public beta 1 addressable claim, 5 source dossiers, one permanent baseline. The passport is unreviewed — an AI-assisted structural migration, not a human or expert endorsement. Every revision keeps a permanent copy under revision history.
Inspect the claims, one by one — verbatim text, sources and caveats for all 1
The text below is copied verbatim from the published record. Each claim names the source dossiers that carry it; caveats stay attached to the claim they qualify.
clm-38efe5003c2b897e
descriptive
independent testing found the low-cost sensors reliable enough for indicative particulate-matter mapping
Sources carrying this claim
Forensic record — source dossiers, gaps, hashes and the exact revision this page renders
This layer records what is known about each source, what is still missing, and the exact snapshot this page is rendering. A missing date, archive or hash stays visible as missing.
Awaiting operator and domain-expert review; publication of this revision implies neither.
sha256:33826377e9d76e138c1ad7c51d52aec605d55e0036489b652e17b7a5a42fb22c
- 1
- of 1 claims mapped
- 5
- source dossiers
- 2
- publication dates recorded
- 0
- archives linked
- 0
- exact locators
- 0
- content captures hashed
Governance facts carried by the record
- Operator
- OK Lab Stuttgart (Code for Germany)
- Actor types
- civil-society
- Funding model
- Not recorded
- Funding description
- Not recorded
- Cost
- Not recorded
- Ownership
- Not recorded
- Decision rights
- Not recorded
- Exit conditions
- Not recorded
5 source dossiers
Sensor.Community — official network site (operator)
- Stable source ID
src-c7e7dcf2e0ca9d92- Publisher
- Name not classified · sensor.community
- Type / language
- web-page · language not classified
- Published
- Not recorded
- Updated
- Not recorded
- Source last checked
- No source-level check date
- Record last verified
- 2026-07-19
- Dossier created
- 2026-08-20
- Retrieved copy
- No local capture recorded
- Archive
- No archived copy linked
- Content hash
- No captured content hash
- Locator
- Descriptive only — not page/paragraph exact
Open the recorded source note
Stuttgart-born global open-environmental-data network; confirms origin, DIY sensors and the Luftdaten→Sensor.Community rename (Nov 2019).
- Claims linked
- Background source; no baseline claim points here
luftdaten.info — Evaluation (operator)
- Stable source ID
src-bac089b496d2aa19- Publisher
- Name not classified · luftdaten.info
- Type / language
- web-page · language not classified
- Published
- 2018-05-29
- Updated
- Not recorded
- Source last checked
- No source-level check date
- Record last verified
- 2026-07-19
- Dossier created
- 2026-08-20
- Retrieved copy
- No local capture recorded
- Archive
- No archived copy linked
- Content hash
- No captured content hash
- Locator
- Descriptive only — not page/paragraph exact
Open the recorded source note
Lists the LUBW 2017 comparison measurements and academic evaluations of SDS011 accuracy.
- Claims linked
- Background source; no baseline claim points here
LUBW — Messungen mit dem Feinstaubsensor SDS011 (state authority)
- Stable source ID
src-0c7dff1984832795- Publisher
- Name not classified · pd.lubw.de
- Type / language
- web-page · language not classified
- Published
- Not recorded
- Updated
- Not recorded
- Source last checked
- No source-level check date
- Record last verified
- 2026-07-19
- Dossier created
- 2026-08-20
- Retrieved copy
- No local capture recorded
- Archive
- No archived copy linked
- Content hash
- No captured content hash
- Locator
- Descriptive only — not page/paragraph exact
Open the recorded source note
Baden-Württemberg environment agency comparison of the SDS011 against a certified PM analyser, 2017.
- Claims linked
- Background source; no baseline claim points here
Evaluation of Crowd-Sourced PM2.5 Measurements ... Stuttgart City (peer-reviewed)
- Stable source ID
src-f0f2e9663104ecbe- Publisher
- Name not classified · link.springer.com
- Type / language
- web-page · language not classified
- Published
- Not recorded
- Updated
- Not recorded
- Source last checked
- No source-level check date
- Record last verified
- 2026-07-19
- Dossier created
- 2026-08-20
- Retrieved copy
- No local capture recorded
- Archive
- No archived copy linked
- Content hash
- No captured content hash
- Locator
- Descriptive only — not page/paragraph exact
Open the recorded source note
Academic evaluation of the citizen SDS011 network's data quality in Stuttgart.
- Claims linked
Weser-Kurier — how citizens build the sensors (press)
- Stable source ID
src-128773c02b4881f9- Publisher
- Name not classified · weser-kurier.de
- Type / language
- web-page · language not classified
- Published
- 2019-07-25
- Updated
- Not recorded
- Source last checked
- No source-level check date
- Record last verified
- 2026-07-19
- Dossier created
- 2026-08-20
- Retrieved copy
- No local capture recorded
- Archive
- No archived copy linked
- Content hash
- No captured content hash
- Locator
- Descriptive only — not page/paragraph exact
Open the recorded source note
Origin story: OK Lab Stuttgart founded 2014, project from 2015, co-founder Jan Lutz, SDS011 + NodeMCU.
- Claims linked
- Background source; no baseline claim points here
Known limits of this passport
- Publisher names and source languages have not yet been classified; domains are recorded without guessing.
- Existing source notes are descriptive locators, not page- or paragraph-exact citations.
- A missing archive, publication date or content hash is shown as null rather than inferred.
- The project-level evidence grade ranks the strongest source in the entry; it is not a truth score for every claim.
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📎 Cite this project
1001 Smart Cities (2026). “luftdaten.info / Sensor.Community citizen air sensors” — Stuttgart, Germany. The Smart City Atlas. https://1001smartcities.org/projects/stuttgart-luftdaten-sensors/ (last verified 2026-07-19). Data: CC BY 4.0.
The underlying data is free to reuse with attribution — see the open data page.