#IndoorCO2map
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protectthekids.bsky.social
NEU: Für die #indoorco2map von @aurel.indoorco2map.com gibt es jetzt eine informative Webseite mit Infos und Erklärungen zu dem unterstützenswerten #CleanAir-Projekt:
indoorco2map-project.com
November 6, 2026 at 9:27 PM
protectthekids.bsky.social
NEW: There is now an informative website for Aurel Wünsch’s #indoorco2map, featuring details and explanations about his #CleanAir community science project — it’s well worth supporting!
➡️ indoorco2map-project.com
We encourage you to get involved! 🫶
IndoorCO2Map
indoorco2map-project.com
November 8, 2026 at 12:18 PM
aurel.indoorco2map.com
With less than a month behind the schedule, there finally is a proper website for IndoorCO2Map which explains the purpose of what we do, provide some overview of the results so far and shows how to get started using the App. indoorco2map-project.com . It's been a struggle, but was worth it.
Screenshot of the IndoorCO2Map website homepage. At the top there’s a navigation bar with the logo, links to About, Goals, Insights, Contribute and Contact, and a “View map” button. The large headline reads “You are what you breathe”. Below it, a short introduction explains that we spend most of our lives indoors and that indoor air quality is rarely measured. It then describes IndoorCO2Map as a global citizen science project where people carry portable CO₂ sensors to map the air in public indoor spaces. Two buttons, “View map” and “Contribute”, sit above a preview of the map: a street map of Berlin dotted with blue, yellow, orange and red pins marking places where CO₂ was measured. Screenshot of two sections of the IndoorCO2Map website. The first section, on a white background, is headed “Our goals” and reads: “IndoorCO2Map ultimately has one goal: to improve indoor air quality around the world. To get there, it aims to demonstrate that good indoor air is feasible in every type of place, help people make informed choices about where they spend their time, share all of its data openly for research and policy, and estimate what better indoor air would cost.” Below the text is a button labelled “Read about our goals”. The second section, on a beige background, is headed “Take part”. On the left is an embedded YouTube video whose thumbnail shows a map of northern and central Germany dotted with blue, yellow, orange and red CO₂ measurement pins, with the IndoorCO2Map logo at the top and a play button in the middle. On the right, the text reads: “Every reading adds to a bigger picture of the air we breathe. It fits around your day rather than interrupting it: start a recording, carry on as normal, and submit it when you’re done. Nothing is collected passively: the app only measures while a recording you started is running.” This is followed by a bulleted list: “Download the free app for iPhone or Android”, “Completely anonymous, no user account required”, “Select your location using GPS-based suggestions”, “Start the recording”. The list continues below the edge of the screenshot.
November 6, 2026 at 4:14 PM
protectthekids.bsky.social
NEU: Für die #indoorco2map von Aurel Wünsch @aurel.indoorco2map.com gibt es jetzt eine informative Webseite mit Infos und Erklärungen zu seinem unterstützenswerten #CleanAir-Comunity-Science-Projekt:
➡️ indoorco2map-project.com
Wir empfehlen euch mitzumachen🫶
November 8, 2026 at 12:17 PM
zwitschermama.bsky.social
Mit #Alttext #IndoorCO2Map #CO2Monitoring #Innenraumluft #Luftqualität #Infektionsschutz #CitizenScience
Screenshot der englischsprachigen Webseite „IndoorCO2Map“. Oben links ein buntes Logo mit stilisierten Gebäuden und Standortmarkierungen, daneben der Schriftzug „IndoorCO2Map“. Rechts eine blaue Schaltfläche „View map“ und ein Menüsymbol. Auf beigefarbenem Hintergrund steht in großer schwarzer Schrift: „You are what you breathe“. Darunter drei englischsprachige Textabsätze über die Bedeutung der Innenraumluftqualität, das Citizen-Science-Projekt IndoorCO2Map und die Erfassung von CO₂-Messwerten in öffentlich zugänglichen Innenräumen. Es folgen zwei Schaltflächen mit den Beschriftungen „View map“ und „Contribute“. Am unteren Bildrand ist ein Ausschnitt einer Straßenkarte von Berlin mit zahlreichen verschiedenfarbigen Standortmarkierungen zu sehen.
November 8, 2026 at 12:30 PM
aurel.indoorco2map.com
Not too experienced with healthcare settings, was speaking more generally and with the data our community collects in the indoorco2map project we definitely see quite a few locations and also trains where there are strong indications that there is a adequate Ventilation system which just runs rarely
November 4, 2026 at 10:44 PM
aurel.indoorco2map.com
While the subway in Vienna generally has rather low CO2-values (just 1% of the measured journeys are above 1400ppm so far and 70% below 800ppm), there has been a outlier today above 2000ppm and even 2800ppm in it's peak. There are currently construction works going on at the main line
Screenshot of the transit journeys page on IndoorCO2Map. A table lists the most recent public transport journeys measured with CO2 sensors, mostly Vienna metro and Leipzig trams, plus a few in Berlin and France. Each row shows the line, start and end stop, duration, average CO2 and a small curve. The summary above says there are 6,874 journeys in total, the median journey average is 767 ppm CO2, 56% of journeys average good (below 800 ppm) and 4% unhealthy (above 1,400 ppm). The highlighted row is a 7-minute ride on Vienna’s U1 metro from Praterstern towards Oberlaa on 27 Oct 2026 at 16:37, measured with an Aranet4. It’s the only red entry in the visible list, with an average of 2,287 ppm CO2 (min 1,865, max 2,848). The chart on the right shows CO2 rising from about 1,850 to almost 2,850 ppm within six minutes, far above the unhealthy line. Most other journeys in the list stay between about 550 and 1,000 ppm. A map shows the area around Praterstern.
October 27, 2026 at 9:34 PM
quarantegan.bsky.social
Apps for the monitor-havers who want to participate in building up this resource -- open-source, privacy-forward, no data retention, fully anonymized data usage, created by CC nerds to aid the still-Coviding community:

iPhone
apps.apple.com/us/app/indoo...

Android
play.google.com/store/apps/d...
IndoorCO2Map Data Collector App - App Store
Download IndoorCO2Map Data Collector by Aurel Wuensch on the App Store. See screenshots, ratings and reviews, user tips, and more apps like IndoorCO2Map Data…
apps.apple.com
October 21, 2026 at 5:41 AM
aurel.indoorco2map.com
IndoorCO2map is more of an inorganisation so we can't really participate directly (and I can't speak for our community as such anyways in any authorative sense), but I'll spread the word and do some more measurements than usual.
saferairproject.bsky.social The Safer Air Project @saferairproject.bsky.social · 21d
💙 What is Making the invisible visible?

Making the invisible visible is an awareness campaign that shines a light on the air we share indoors. We’re asking organisations to measure their indoor air quality and make that information publicly visible by November 2027.
October 20, 2026 at 6:25 PM
quarantegan.bsky.social
Just adding for folks not able to acquire a CO2 monitor, IndoorCO2Map is a great resource in areas of the world where there are enough participants (and in less covered areas, help encourage more folks with monitors to pitch in!):

indoorco2map.com
Indoor-CO₂ Atlas
indoorco2map.com
October 21, 2026 at 5:41 AM
aurel.indoorco2map.com
And I also procrastinated by polished the adminstrative map which shows user activity by region up a bit.
A map of Europe using NUTS-2 Administrative regions showing the regions colored by amount of building measurements taken. The ten busiest regions are labelled: Wien 2,564, Leipzig 1,502, Berlin 1,441, Oberbayern 1,152, Düsseldorf 1,025, Köln 949, Schleswig-Holstein 828, Dresden 814, Zuid-Holland 537 and Braunschweig 496. Outside the German-speaking countries and the Netherlands, East Anglia in England stands out with 334 measurements, Île-de-France has 168 and most of eastern and south-eastern Europe is still black with 0 measurements. Map of North America showing the number of indoor CO₂ measurements on IndoorCO2Map per state or province, coloured from pale green (1 to 24) to dark purple (1000+), with black for regions without measurements. The ten busiest regions are labelled: California 957, New York 342, Massachusetts 238, Minnesota 63, Illinois 58, Ontario 43, Iowa 39, British Columbia 38, Ohio 38 and Florida 35. Alberta, Saskatchewan, Manitoba and almost all of Mexico are still black.
October 9, 2026 at 7:29 PM
aurel.indoorco2map.com
It’s been quite a while since I posted about indoorco2map.com here, but I’ve not been sleeping.
1) new website properly explaining the project will be put online on october 9th
2) a report going in depth into the data collected so far will also be released on the same day (one chart as teaser here)
Chart titled "The worst tenth of visits: over 2,500 ppm in pubs and bars". Horizontal box plots of indoor CO₂ for 19 types of places, from IndoorCO2Map open data (export of 23 September 2026, all countries, place types with at least 60 measured places). Each box shows the middle half of visits, a line marks the median, whiskers run from the 10th to the 90th percentile and a dot marks the 95th percentile. Percentiles are location-weighted: every place counts the same, however often it was measured. Dashed lines mark 1,200 and 2,000 ppm. 90th percentile (one visit in ten is higher), from highest to lowest: pubs 2,720 ppm, bars 2,551, places of worship 1,643, schools 1,571, theatres 1,533, doctors' practices 1,513, restaurants 1,399, supermarkets 1,394, cafés 1,382, cinemas 1,378, hotels 1,234, bakeries 1,177, hospitals 1,159, museums 1,109, drugstores 1,099, clothes shops 1,011, shopping centres 967, fast food 918, DIY stores 723. The six types from pubs to doctors' practices are shown in red because their 90th percentile is 1,500 ppm or more. Pubs and bars have by far the longest tails: their boxes reach about 1,500 to 1,600 ppm and their 95th percentiles lie near 3,900 and 3,600 ppm. The other boxes lie roughly between 550 and 1,250 ppm. Notes next to the chart: in pubs and bars the worst tenth of visits is above 2,700 and 2,550 ppm, the worst twentieth above 3,600. In doctors' practices one visit in ten is above 1,500 ppm, one in twenty above 1,800. School measurements are probably biased: they are mostly taken by teachers who control the windows and are more aware of air quality than the average teacher.
September 28, 2026 at 7:22 PM
sonjahartl7.eurosky.social
4/5
Und wo wir selbst keinen Einfluss haben?

Dort sollten wir wissen, wie die Raumluft ist

Das Citizen Science Projekt #IndoorCO2Map macht CO₂Werte in Geschäften, Ordinationen & Co sichtbar

Für Schulen zeigt die TUGraz #ImpAQS Studie: Keine Klasse blieb übers Jahr innerh d unverbindl Richtwerts
Indoor-CO₂ Atlas
indoorco2map.com
September 7, 2026 at 4:34 PM
hunteress.eurosky.social
📌 #IndoorCO2Map #Sensor #Aerosols #CO2
March 7, 2025 at 1:36 PM
stefanhemler.bsky.social
👆Wenn ihr das Projekt von @aurelwuensch.bsky.social unterstützen wollt, ladet euch die App (Android & IOS) auf euer Handy:
play.google.com/store/apps/d...
Damit fügt ihr neue Messwerte z.B. beim Einkaufsbummel in die Karte ein - geht ganz einfach mit Aranet4, Inkbird oder Airvalent als CO2-Messer.
IndoorCO2Map Data Collector - Apps on Google Play
Measure indoor CO2 levels to help create a open dataset (needs CO2 Sensor)
play.google.com
August 25, 2024 at 7:16 AM
fredyneeser.bsky.social
CO2-Messung während einer Vorstellung des Zirkus Conelli auf dem Bauschänzli, Zürich.

Schönes Event, aber für uns natürlich nur mit #FFP3.

CO2-Spitzenwert: 3600 ppm! 😬

#IndoorCO2map

@aurel.indoorco2map.com
CO2-Verlauf während einer Zirkusvorstellung im Zirkus Conelli, Sonntag, 08.12.2024, 14:55 – 17:00 Uhr. CO2-Spitzenwert: 3600 ppm Während der Pause (Zelt-Aussenbereich) lag die CO2-Konzentration zwischen 1600 und 2000 ppm.
December 12, 2024 at 11:53 AM
keinhoernchen.bsky.social
In letzter Zeit "verschluckt" sich meine IndoorCO2map App häufiger und eine laufende Messung verschwindet, oder das Abrufen der Daten dauert sehr lange. Kann ich irgendetwas tun um das zu vermeiden? @aurel.indoorco2map.com #indoorco2map
November 21, 2025 at 9:00 AM
safeairdocs.bsky.social
An Arztpraxen und Impfstellen:
Wir suchen Ärzte oder Impfstellen, die das Interesse haben Ihre CO₂-Werte aus der Praxis zu veröffentlichen.

Wer hat Interesse an diesem Prototyp teilzunehmen?

Schickt uns gerne eine DM.
In Zusammenarbeit mit
@indoorco2map
March 17, 2026 at 9:49 PM
seemaedel.bsky.social
Ich hätte da eine Idee, warum so viele nach der Impfung einen Infekt bekommen. (Hat natürlich nichts mit der Impfung an sich zu tun.)

Und ich befürchte (so wie die Kurven aussehen), die Werte im Wartezimmer wären noch weiter gestiegen, wäre ich länger dort gewesen.
Screenshot von 5 Kurven der IndoorCO2map. Bei den beiden neuesten Kurven vom Oktober bzw. November 25 war der Peak bei ca. 2300 bzw. 3000 ppm. Auch zwei der anderen drei Kurven liegen deutlich über 1000 ppm.
November 26, 2025 at 9:39 PM
ingridbeate.bsky.social
Find locations with clean air in the IndoorCO2Map.
And contribute 🤩
bsky.app/profile/aure...
aurel.indoorco2map.com Aurel Wünsch @aurel.indoorco2map.com · Jun 24
The past weeks I spend most of my available time for the indoorco2map.com project with small prototypes and experiments to identify what I should work on in the next months and to get an idea how much time these things might need. I am still in this process, but want to share the current state
July 30, 2025 at 10:13 AM
strawberrycassis.bsky.social
You can read more about it here

samherniman.github.io/Fluconf2026-...
Indoorco2map Fluconf 2026 - Presentation details
samherniman.github.io
February 1, 2026 at 1:02 AM
covidsafecologne.bsky.social
Das Juli-Treffen ist ab jetzt offen zur Anmeldung und diesmal ist es ein kleines special Event!
Infos findet ihr am Flyer und auf Anfrage - wir freuen uns auf euch! :)
Seite 1 des Flyers mit einer Einkaufsstraße mit Geschäften und dem Kölner Dom, der eine kleine Maske trägt, als Hintergrund sowie mit dem Logo von Covid Safe Cologne (CSC). Die Überschrift "Indoor CO2 Messevent" ist wie ein Leuchtreklame-Schild am linken Rand vertikal gestaltet. Daneben ist ein mit Schmucksteinchen beklebtes aranet4 abgebildet. Der Text lautet: Im Juli in Köln, Details auf Anfrage. Teilnahme auch ohne Messgerät möglich! Seite 2 des Flyers mit dem gleichen Hintergrund und einem Smartphone, aranet4 und dem App-Icon der IndoorCO2Map-App abgebildet. Der Text lautet: Kölner Indoor-CO2-Messevent für Covid-bewusst lebende Menschen und alle, die FFP2-Masken tragen, um Infektionen zu vermeiden. Wir messen zusammen die Luftqualität in Läden. Psst: es gibt eine kleine Belohnung für alle! Um Details zu erfahren, schreib uns eine Nachricht auf Bluesky/Instagram an @covidsafecologne oder auf Twitter/X an @csafecologne.
July 4, 2025 at 10:09 PM
ingridpanowetz.bsky.social
Hm, laut #IndoorCO2map hat „mein“ nächster Hofer ähnlich schlechte Werte.
November 8, 2025 at 4:14 PM
ifff.bsky.social
indoorco2map.com

Eine gute Gelegenheit sich an einem coolen Projekt zu beteiligen!

Voraussetzung: Aranet
App: IndoorCo2Map

Ich kaufe mir einen😇
Indoor-CO₂ Atlas
indoorco2map.com
September 29, 2024 at 5:46 PM
igoe.at
#SaubereLuft und ein ausgiebiges Frühstück im Lokal Türkis im Donauzentrum
#seetheair #Ventilation #co2monitoring
Teller mit türkischem Frühstück (Gurke, Tomaten, Salat, Oliven, Schafskäse, Pommes, ...), ein Glas Tee und das Aranet4 mit Messwert 696 ppm. Die Messwerte für Loksl (Türkis), wie sie der indoorCO2Map übermittelt werden. Konstant um 700 ppm über etwa 12 min. Es ist Ventlation System angehakt.
December 4, 2025 at 9:57 AM