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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
Can you blur the location of a Purple Air device? @stevie about 3 years ago 2
Does anyone have experience assembling low-cost VOC kits using Adafruit’s VOC sensor? @stevie over 3 years ago 4
Are there examples where environmental concerns were addressed as a result of people filing complaints (or suspected permit violations)? @stevie over 3 years ago 7
Do you really need a special filter to filter out ultrafine particulates in the air? @BostonFern over 3 years ago 2
Vape detector @Ryanwest over 3 years ago 4
What are the health impacts of the Aluf Plastics Plant from air pollution? @stevie over 3 years ago 5
How do we keep the pressure and momentum high after a recent court ruling win? @stevie over 3 years ago 2
What are air testing labs or companies we can recommend to our town board that our community can trust? @stevie over 3 years ago 3
Is there a way to make a cheaper "UV Hound"? @liz over 3 years ago 11
SPS30 instead of PlanTower units? @subir over 3 years ago 4
Which sensor is the best to use it during cycling? @niklasjordan almost 4 years ago 2
Who are the environmental organizations that do air quality monitoring in Deer Park Texas? @stevie almost 4 years ago 1
How we can do our own air quality monitoring in Deer Park Texas? @stevie almost 4 years ago 0
combining code for PMS7003 into Aircasting code @vinushi1995 almost 4 years ago 2
What are indoor air quality concerns related to nail salons? @stevie almost 4 years ago 7
PMS7003 with Arduino MEGA2560 @vinushi1995 almost 4 years ago 3
How can I start a project on environmental air quality around crop dusting areas @lubcarreon almost 4 years ago 6
How to interpret PMS5003 sensor values? @samr about 4 years ago 10
Is there a predictive relationship between the number of PM 2.5 and smaller airborne particulates compared to the mass of the same ug per cubic meter? @Tomp about 4 years ago 5
Where can diffusion tubes for detecting nitrogen dioxide be found in different parts of the world? @warren about 4 years ago 3
Seeking sources of local wind/weather data @warren over 4 years ago 3
How to start air monitoring project? @shannonkmcalpine over 4 years ago 7
Building a case against Aluf Plastics -- polluting my town & I need help @michaelwma over 4 years ago 8
What do we know about EPA National Emissions Inventory (NEI) data? @warren over 4 years ago 0

Also see

Additional media

By @zengirl2: