Across the globe, wildfires also pose a public health challenge: how can good indoor air quality be ensured during a fire? www.asumag.com/energy/indoo...

Schools test indoor air quality strategies as wildfire smoke risks grow

The American Lung Association is urging K-12 schools to develop indoor air quality plans, while Boston University researchers are testing classroom-level strategies to help protect...

asumag.com

The wind has shifted. See also the fire around Madrid.

LET'S AIR@nousaerons.bsky.social · last wk.

Forest fires in France are affecting air quality across a large part of the country—see the figures on iqair.com. Masks and air purifiers should be deployed, particularly for the most vulnerable.

Forest fires in France are affecting air quality across a large part of the country—see the figures on iqair.com. Masks and air purifiers should be deployed, particularly for the most vulnerable.

Absolutely incredible work. Thank you for this tool @nukit.bsky.social

Nukit@nukit.bsky.social · 3w ago

FilterBoxBuilder.com updated to 2.0 Now with: Templates for hand-cut air purifier designs Shows estimated CADR, ACH, power consumption, and monthly cost. Supports five filter cubes. Box and PC fan options. Flat-panel-style Stacked Starkvind filters Part and seam labels Lots more...

Improving air quality and thermal comfort in schools: an architect's guide to heatwave resilience. As heatwaves become more frequent, architects are rethinking how schools can remain healthy, resilient, and operational. A paper from Royal Institute of British Architects. www.riba.org/work/insight...

Improving air quality and thermal comfort in schools

As UK heatwaves become more frequent, architects are rethinking how schools can stay cool, maintain good indoor air quality and provide healthy learning environments. See what the latest guidance and ...

riba.org

A small disabled people's organisation in the UK called DAFT -Designing Accessible Futures Together- has build DIY Air Cleaners for community venues. They used our CardBox Air Cleaner tutorial and improved it. The new guide is available on: letsair.org/diy Excellent work!

The figures are staggering: to tackle climate change, the French authorities must renovate some 400M m2 of public buildings. The bill could climb as high as €500B —according to the upper-end estimates of certain government sources. (a 2023 article) www.lemonde.fr/politique/ar...

Le « chantier du siècle » de la rénovation thermique des bâtiments publics en France

L’Etat et les collectivités locales doivent rénover pas moins de 400 millions de mètres carrés. Un enjeu écologique et énergétique, qui nécessite des financements pouvant atteindre jusqu’à 500 milliar...

lemonde.fr

A new $500M fund is hoping to financially back the development of treatments that could protect people from many airborne viruses at once. It is also looking to support research into the adoption of technologies like air filtration. time.com/article/2026...

A New $500 Million Fund Is Trying to Eliminate the Common Cold

The project, called Intercept, aims to financially back the development of treatments that protect against respiratory infections of all kinds, plus technology to clean air.

time.com

France is experiencing (very) hot weather; children are staying home, and some hospitals lack air conditioning. Indoor Environmental Quality is a critical issue that should guide a large number of public policies. When will dedicated structures be established to support the necessary changes?

More equipment heading out to schools as part of the Mayor’s School Filters Programme. Using timers to run air purifiers on a fixed school‑day schedule keeps air cleaning consistent, automatic and low‑effort for teachers 💨

In French: “Architecture is also a matter of public health,” Eric Lengereau, director of the National School of Architecture of Nantes. - and this will increasingly be the case - www.lemoniteur.fr/vie-du-btp/g...

« L’architecture est aussi une affaire de santé publique », Eric Lengereau, directeur de l’Ecole nationale supérieure d’architecture de Nantes

Entretien avec Eric Lengereau, directeur de l’Ecole nationale supérieure d’architecture de Nantes.

lemoniteur.fr

The current outbreak of Andes virus (#Hantavirus) has led many experts (and others) to discuss aerosols. But what exactly is an aerosol? Below is our explanatory sheet from our booklet on airborne diseases, available at letsair.org/mediation

Airborne transmission of the Andes virus (hantavirus) is being analyzed and further research is needed. To understand what airborne transmission is, the terminology, and the mechanisms involved, a 26-page booklet in PDF format can be downloaded at letsair.org/mediation

Viruses, bacteria, contagiousness, vaccines… Find in our infographic information concerning diseases caused by airborne pathogens, including the Andes virus (hantavirus) .

New version of our infographic on airborne diseases. We've added the Andes virus (hantavirus), which appears to be airborne. R0 is the degree of contagiousness: the higher the R0, the more contagious the disease. The R0 of Andes virus is not yet known, but it is certainly low.

Illinois bill could require air quality monitors in classrooms. The bill states that school districts should ensure all active classrooms are equipped with air quality monitors. Advocates expect the state to spend $10 M to buy monitors for classrooms. www.wandtv.com/news/stateho...

Illinois bill could require air quality monitors in classrooms

A plan moving in the Capitol could help improve the indoor air quality for Illinois schools.

wandtv.com

Minor update to our infographic on diseases transmitted through the air we breathe. Hope that helps.

The latest version of our infographic on airborne diseases is now available as a PDF at letsair.org/mediation

New version of our infographic on diseases transmitted through the air we breathe. Following several comments , we've repositioned vaccines between pathogens and diseases for greater clarity.

New version of our infographic on Diseases from pathogens than can be transmitted through the air we breath. We took into account proposals: change of colours, addition of Neisseria meningitidis and indication of vaccines recommended for children in the USA by the Centers for diseases control.

Shipment coming soon. This is Jaspair, our CO2 monitor for schools. More information at https//letsair.org/jaspair

A first user guide for Jaspair, our CO2 monitor designed for schools, is now available at : letsair.org/jaspair/

French people : nous recherchons des enseignants d'écoles maternelles ou primaires situées en Essonne pour tester Jaspair dans leurs classes. Merci de nous contacter sur jaspair@letsair.org

Small-scale production of Jaspair, our CO2 monitor designed for schools, is underway. We will soon be contacting the schools where the initial tests will take place.

During a lab at the @centralesupelec.bsky.social engineering school, Jaspair - our CO2 monitor - checks that the indoor air renewal remains good. The belly is green, the CO2 level is < 600 ppm, and the air-score is A. Everything is in order, and the students can work comfortably and safely.

We have received the new printed circuit boards for JaspAir, our CO2 monitor designed for schools. We will now be able to launch production of 20 units, which will be delivered soon to the schools that will test our device. More info on Jaspair at letsair.org/jaspair

I built AIRE, a free browser tool that estimates airborne COVID risk indoors using the PMC framework. It also offers an optional “cigarette pack equivalent.” Why? Because 3% per event is abstract. Cumulative harm is easier to grasp on a familiar scale. 🧵

Ventilation and air quality in education and childcare settings, a new guidance from 🇬🇧 department of education. UK adopts the global standard for schools: CO2 level must be < 800ppm. The challenge is to make this possible everywhere. H/T @safeairschoolsuk.bsky.social www.gov.uk/government/p...

Ventilation and air quality in education and childcare settings

How schools and other education and childcare providers should monitor and manage ventilation and air quality.

gov.uk

Improving indoor environment reduces asthma attacks in adults, study finds. Combining home upgrades with health education can close care gaps and significantly improve life for adults living with asthma. stories.tamu.edu/news/2026/02...

Improving indoor environment reduces asthma attacks in adults, study finds

Combining home upgrades with health education can close care gaps and significantly improve life for adults living with asthma.

stories.tamu.edu

Of the 11 mandatory vaccines in France, 8 protect against diseases transmitted through the air we breathe. Airborne transmission is the main route of transmission of childhood diseases and needs to be better understood and taken into account by the various stakeholders involved.