Airwyn lets you monitor a single public PurpleAir sensor or US EPA (AirNow) sensor. You can get a notification with audible alert when air quality index (AQI) goes up or down. This can let you make important decisions for your safety and health -- like when to go inside, and when to open or close windows.

A map gives an overview of AQI in your neighborhood or over the entire world, and lets you pick a PurpleAir or US EPA sensor to monitor. A simple graph shows how the air quality has changed over the last few days for your chosen sensor.

AQI conversion formulas from US EPA, LRAPA, and AQandU are supported.

What’s New

Version 1.01

Corrected ad unit ID and cloud message subscription logic

App Privacy

The developer, Airwyn LLC, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy.

Data Used to Track You

The following data may be used to track you across apps and websites owned by other companies:

  • Location
  • Identifiers

Data Not Linked to You

The following data may be collected but it is not linked to your identity:

  • Location
  • Identifiers
  • Usage Data
  • Diagnostics

Privacy practices may vary, for example, based on the features you use or your age. Learn More


  • Family Sharing

    With Family Sharing set up, up to six family members can use this app.

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