Public Lab Wiki documentation

Open Air

This is an open source community effort to develop a range of low-cost air quality monitoring and remediation tools. Welcome!

Join in by:

  • Reading about goals and asking great questions
  • Trying (and critiquing) our community-made how-to guides
  • Posting your own how-to guides and mods
  • Building on others’ work; hack and remix the kits to refine and expand them
  • Submit your improvements for inclusion in an upcoming starter kit release or add-on
  • Serving on a Research Review Group for a 3 month period


State-by-state info sheets on indoor air quality assistance and governance (work in progress!)


Purpose Category Status Author Time Difficulty Replications
Build a plant-based air purifier build in-progress @nshapiro 3h easy 4 replications: Try it »
DIY Formaldehyde Test Kit build in-progress @nshapiro 3h medium 3 replications: Try it »
Leptos: gas detection and monitoring station - - @imvec - - 0 replications: Try it »
DIY: Wi-Fi Streaming Weatherproof PM2.5 Monitor (Dylos-based) monitor complete @kevinvivergy 5h medium 0 replications: Try it »

Add an activity  or request an activity

Activities should include a materials list, costs and a step-by-step guide to construction with photos. Learn what makes a good activity here.

Frequently Asked Questions about air quality

Title Author Updated Likes
Looking for hands-on help with a datalogger! @bronwen 8 days ago
Can MiniVol (TAS Particulate Matter Monitor) measure Black Carbon or Elemental Carbon? @stevie 10 days ago
Hey @matthew I am trying to build same PPM kit you guys have here. Where did you guys get the sampler stub? @Matej 11 days ago
what data-logger will work with my portable HCHO meter? @nshapiro 18 days ago
Lego Spectrometer suitable for studying sunlight? @jsbonillam about 2 months ago
3 particle type @Ag8n 2 months ago
What are good humidity sensor/monitors to use with gas sampling kits? @gretchengehrke 3 months ago
Anyone in Ontario working on ultrafine particle pollution? @liz 3 months ago
What are different ways to collect respirable dust samples for analysis? @warren 3 months ago
What kind of Framework for Participatory PM2.5 can be used for creating monitoring cities? @stevie 3 months ago
What is the best way to take a sample of snow to look for particulates? @stevie 4 months ago
What are ways to make DIY filters to remove particulate pollution from indoor air? @Zengirl2 4 months ago
What are some ways to collect dust or particulate samples for analysis? @warren 5 months ago
Training in odor identification? @Sara 5 months ago
How do I choose between different types of air canisters for grab sampling? @stevie 6 months ago
What are the relative rates of hydrogen sulfide oxidation in ambient air? @gretchengehrke 7 months ago
Methods for or experience measuring workplace hydrogen sulfide gas? @gretchengehrke 8 months ago
What type of health issues are associated with inhalation of ultrafine particles? @liz 9 months ago
What do the terms attainment and nonattainment mean? @liz 9 months ago
How do you account for signal drift with sensors in the field? @gretchengehrke 9 months ago
Do you have resources on odor logs and odor reporting platforms? @gretchengehrke 10 months ago
What are the health effects related to fine particles of calcium carbonate? @stevie 11 months ago
AERMOD: Is it a good model? How has it been tested and verified? @marlokeno over 1 year ago
lightweight air quality sensors for a weather balloon @glenc over 1 year ago
What kind/size of microdust does activated carbon give off & how much of a concern is it? @jfrankamp over 1 year ago
In the plant based air purifier, could airflow go the other way, using an unmodified pump? @warren over 1 year ago
How can i know if my plant-based air filter is working? @liz over 1 year ago
Is CALPUFF a good air quality modeling tool @marlokeno over 1 year ago
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By @zengirl2:

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list:plots-airquality activities:open-air upgrades:open-air