AirGradient Open Source Air Quality Monitors
We design professional, accurate and long-lasting air quality monitors that are open-source and open-hardware so that you have full control on how you want to use the monitor.
Learn MoreAir quality has become one of the most important environmental and public health issues of our time. It shifts by the hour, varies street by street, and affects billions of people in ways that are often invisible until they become impossible to ignore. For years, our mission at AirGradient has been to make this invisible problem visible, understandable, and actionable.
Today, we are taking a meaningful step forward in that mission with the launch of the AirGradient mobile app for iPhone and Android.
These apps are more than a new interface for air quality data. They bring together years of open-source hardware development, global community involvement, and a commitment to transparency, accessibility, and open data. They are designed to serve anyone who wants to better understand the air they breathe, whether you are in New York or Delhi, Bangkok or Bogotá, or anywhere else where air pollution impacts daily life.
Watch the video for a quick overview:
With most of the free air quality apps in the App stores, YOU become the product. Either through aggressive invasion into your privacy, annoying ads, or a sales tool for affiliate products. AirGradient’s open-source nature, and us having our revenue stream based on hardware sales makes us independent of the need to monetize this app - thus we can provide a much better user experience.

The apps are now live. Search for “AirGradient” in your app store or use the links below:
Our designer Cid created our AirGradient mascot characters, which bring a bit of warmth and personality to a topic that is often technical and heavy. You will see them appear in educational content explaining the current air quality and mitigations you can do.

This is the first release of this app, and we have big plans to extend the functionality quickly. The next steps will focus on adding the core functionality of the dashboard to the app, so that people who deployed our open-source hardware monitors can see more details about their air quality and also configure their own monitors.
From a small school project to a global community, the goal has always been the same: help people understand the air they breathe and empower them to demand cleaner air.
We will continue to feature communities, schools, activists, and citizen scientists inside the app. If your community would like to be included or collaborate, we would love to hear from you.


We design professional, accurate and long-lasting air quality monitors that are open-source and open-hardware so that you have full control on how you want to use the monitor.
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