Airwyn: Air Quality Alerts for

Contains adsIn-app purchases
140 reviews
Content rating
Screenshot image
Screenshot image
Screenshot image
Screenshot image
Screenshot image

About this app

Airwyn lets you monitor a single public PurpleAir sensor or US EPA (AirNow) sensor. You can get ongoing silent notifications, or choose to get an 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, and lets you pick a PurpleAir or US EPA sensor to monitor. A simple color-coded 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.

Don't like ads? Airwyn Pro, available as an in-app subscription, removes all the advertising. Pro also features a home screen widget.
Updated on
Jan 26, 2021

Data safety

Developers can show information here about how their app collects and uses your data. Learn more about data safety
No information available
140 reviews
Todd J
January 15, 2022
Disappointing. Pro is supposed to have a desktop widget, but it doesn't (not one I can find anyway, even after restart). And after less than a day, the app isn't updating properly. The value in the app/notification bar is out of sync with my sensor (and all nearby) on the PurpleAir map.
5 people found this review helpful
Did you find this helpful?
Dan K
April 24, 2021
Promising app but needs improvement: Can't find a way to turn off the notification bar icon/alerts. No way to zoom in/out on the graph to view finer detail. No geolocation on the map, it lands me in California every time. Font size of the AQI on the page to monitor a sensor is too small. I'd like the ability to integrate with WUnderground local forecast. Pale red background is difficult to read, prefer plain white. The Pro version of the app needs a one-time purchase option.
9 people found this review helpful
Did you find this helpful?
Peter Wong
January 10, 2023
app does what i want, which is show my purpleair sensor in my notifications and in a widget. not great that the developer is asking $8/year for this simple software; i'd be ok with that if development were active and the developer responsive. but, still haven't received a response to my email from several weeks ago. one more star from me for: status bar AQ value (not icon), accurate + complete conv. val's (US EPA diff on PA map vs app, & no "ALT cf=3"). 5th star for: 1-time fee+no subscr.
Did you find this helpful?

What's new

2021-01-26 - Fix rare crashes; prompt for Pro when adding a second sensor
2021-01-24 - Fix a crash
2021-01-21 - Track multiple sensors (Pro feature); woodsmoke conversion; get optional alerts when data is old
2020-12-28 - Introducing Airwyn Pro, with home screen widget and no ads
2020-11-29 - Fix map pinch-zooming; night mode color tweaks
2020-11-26 - Do spatial clustering on the server for much faster map performance
2020-11-19 - Small bug fixes