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Work · alternatives · 2026

24 alternatives to A subtly obvious e-paper room air monitor

In the cold season we tend to keep the windows closed. The air gets "stale": humidity often rises above 60 %, which can harm our wellbeing and promote mould. At the same time the CO₂ level in the air increases, which impacts our ability to concentrate. So I built a room air monitor that stays unobtrusive as long as everything is in the green zone, but becomes deliberately noticeable once thresholds are exceeded. For my personal love of statistics I also visualise the measurements in a clear dashboard.

A subtly obvious e-paper room air monitor displays indoor air quality by tracking humidity and CO₂ levels. The device remains discrete when conditions are healthy but becomes noticeable when humidity exceeds 60% or CO₂… Below are 24 products that do a similar job, ranked by how close each is in meaning and then by launch-day votes.

  1. 1AL

    Hi HN! I’ve been working on an air quality measuring device called Air Lab for the past three years. It measures CO2, temperature, relative humidity, air pollutants (VOC, NOx), and atmospheric pressure. You can log and analyze the data directly on the device — no smartphone or laptop needed. To better show what the device can do and how it feels like, I spent the past week developing a web-based simulator using Emscripten. It runs the stock firmware with most features available except for networking. Check it out and let me know what you think! The firmware will be open-source and available…

    2025 · networkedartifacts.com · its alternatives →

  2. 2

    A simple webserver / CO2 Monitor. Contribute to Maddimax/MadCO2 development by creating an account on GitHub.

    2019 · github.com · its alternatives →

  3. 3

    A hobby project of mine that was surprisingly easy to put together! I love waking up and seeing the freshly generated image.

    2024 · github.com · its alternatives →

  4. 4

    Get intelligent insights into your air quality

    2018 · indiegogo.com · its alternatives →

  5. 5

    A comprehensive indoor air quality monitoring system built with ESP32-C3 Super Mini and multiple environmental sensors. This project helps you monitor CO2, temperature, humidity, volatile organic compounds (VOCs), nitrogen oxides (NOx), and particulate matter (PM1.0, PM2.5, PM10) to maintain healthy air quality in your home or office.

    2025 · github.com · its alternatives →

  6. 6

    Pick temperature and air quality and find places that match

    2020 · its alternatives →

  7. 7

    Monitor your world with Enviro and Enviro + Air Quality for Raspberry Pi!

    2019 · shop.pimoroni.com · its alternatives →

  8. 8

    CO₂ & Temperature monitor. Contribute to larsp/co2monitor development by creating an account on GitHub.

    2018 · github.com · its alternatives →

  9. 9

    The smart air quality tracker to help you find clean air

    2017 · plumelabs.com · its alternatives →

  10. 10
    Wynd▲180

    A smart portable air purifier for your personal space

    2017 · hellowynd.com · its alternatives →

  11. 11AH
  12. 12

    Hi HN, This is my attempt to fix groggy mornings by lowering my bedroom CO2 from 1700 ppm to ~900 ppm. I designed a simple, 3D-printed fan duct that directs air under the door to improve air circulation. A note on the design process: I used CadQuery, a Python library for creating parametric 3D models. I didn't know tools like this existed and highly recommend it if you can program; it turned out to be more convenient than manually iterating on prototypes in a GUI. The project is open source and the post explains the full build. Happy to answer any questions.

    2025 · lepekhin.com · its alternatives →

  13. 13

    'See the Invisible' - Air Quality Monitor

    2018 · getawair.com · its alternatives →

  14. 14

    Safely reopen in 3 easy steps.

    2020 · birdlevel.com · its alternatives →

  15. 15

    Track temperature, humidity, noise, etc across your home.

    2014 · cubesensors.com · its alternatives →

  16. 16

    Smart sensor that monitors your environment and air quality

    2018 · its alternatives →

  17. 17
    AWAIR▲142

    A smart air quality monitor

    2015 · getawair.com · its alternatives →

  18. 18

    Live Data and thematic Chat based on the nearest station.

    2020 · its alternatives →

  19. 19
    Breeze▲61

    The easiest, most accurate way to measure carbon emissions

    2022 · its alternatives →

  20. 20

    The Portable Air Quality Monitor

    2021 · kickstarter.com · its alternatives →

  21. 21
    Airboxlab▲108

    Open source air quality monitor you can build yourself

    2015 · airboxlab.foobot.io · its alternatives →

  22. 22

    See your air in a new light - Air Quality / Smart Plug

    2019 · its alternatives →

  23. 23

    App to track air quality, pollen, UV and fires

    2022 · getaircare.com · its alternatives →

  24. 24

    An air quality index widget for iOS, iPadOS and macOS.

    2021 · breathable.app · its alternatives →

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Ranked by how close each launch is in meaning, then by votes. Prices were read from each product’s own site when checked and can change. Refine with your own description →