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Open Air

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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!)


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 Comments
What causes shimmering air above flares? @kgradow1 about 2 years ago 4
Where is non-compliance reported for fencline monitoring? @A_SCH about 2 years ago 1
How accurate is data on WebFire? @ajg434 about 2 years ago 3
How do you account for wind in an air study? @kgradow1 about 2 years ago 2
Updated list of EPA TO methods? @kgradow1 about 2 years ago 1
What are ways to monitor for oil and gas spills on private property? @stevie about 2 years ago 2
T and RH compensation for PM measurements? @subir about 2 years ago 2
Can we add a 2um filter to the bucket monitor to capture particulates? @kgradow1 about 2 years ago 3
MiniVol for gas sensing? @kgradow1 over 2 years ago 1
Is the Purple Air sensor an EPA-validated tool? @kgradow1 over 2 years ago 4
Have you used the bucket air sampler or other grab sample tool? @kgradow1 over 2 years ago 11
Have you used surveys to inform open hardware development? @kgradow1 over 2 years ago 1
Can we use a Purple Air through a VPN? @stevie over 2 years ago 4
Where can I find good low-cost air quality sensors? @mgoodwin over 2 years ago 3
Can you blur the location of a Purple Air device? @stevie over 2 years ago 2
Does anyone have experience assembling low-cost VOC kits using Adafruit’s VOC sensor? @stevie over 2 years ago 8
Are there examples where environmental concerns were addressed as a result of people filing complaints (or suspected permit violations)? @stevie over 2 years ago 7
Do you really need a special filter to filter out ultrafine particulates in the air? @BostonFern over 2 years ago 2
Vape detector @Ryanwest over 2 years ago 4
What are the health impacts of the Aluf Plastics Plant from air pollution? @stevie over 2 years ago 5
How do we keep the pressure and momentum high after a recent court ruling win? @stevie over 2 years ago 2
What are air testing labs or companies we can recommend to our town board that our community can trust? @stevie over 2 years ago 3
Is there a way to make a cheaper "UV Hound"? @liz almost 3 years ago 11
SPS30 instead of PlanTower units? @subir almost 3 years ago 4

Also see

Additional media

By @zengirl2: