Paku for PurpleAir 4+

Air Quality Map and Widgets

Kyle Bashour

    • 4.8 • 98 Ratings
    • Free
    • Offers In-App Purchases


Paku is the best app for checking PurpleAir. View air quality on the map, filter by indoor or outdoor sensors, and see running averages. You can also view the hyperlocal temperature and humidity reported by sensors.

Keep an eye on the AQI right in your Today View, with widgets that support showing AQI near you or a specific Purple Air sensor.

What’s New

Version 3.1.3

Fixes an issue where subzero temperatures did not display a negative sign on map annotations.

Ratings and Reviews

4.8 out of 5
98 Ratings

98 Ratings

@Magnuson ,

Good start, hoping for more

Areas I’d like to see improvement:
- Ability to choose a sensor and stay with that sensor. I own a PA sensor and only want to see data from that sensor. I don’t want to see data from other sensors as I move locations.
- Get rid of the AQandU filter. I don’t like that filter nor trust the data it produces. If this app is going to force the use of a filter, it should be the EPA filter, not the AQandU filter.
- Provide time-based averages. Seeing the current AQI is only a small part of the picture. Gaining an understanding of how the AQI value is trending is immensely valuable and often times more valuable than the current reading.

Developer Response ,

Thank you so much for your feedback! I’ve been heads down on getting map support out, but you can also turn off the AQAndU conversion in 1.1.0. All the other asks are on the roadmap too. Enjoy!

Update: with 1.2.0 you can now choose a specific sensor for the widgets!

@Magnuson ,

Finally an app to view PurpleAir data!

I love how Paku lets me avoid the clunky PurpleAir website. The app is wonderfully simple and looks good.

However, the app is a little too simple. For example, the app never refreshes data. If I leave the app open and want to see the current air quality, I have to quit and relaunch the app. Ideally the app would refresh data automatically every 5-10 minutes. However, a manual refresh option is an absolute requirement for an app like this. Having to quit and relaunch the app just to refresh the data available is super obtuse and cumbersome.

Another issue is that PurpleAir sensors grab lots more data than only the AQI. I find PurpleAir sensors even more useful for their temperature readings than their AQI readings. The sensor saturation is so high in the San Francisco Bay Area that they make it really easy to see what all the microclimates are like around the bay. I can then use this to plan my outdoor activities. It would be fantastic if Paku allowed us to view temperature data from PurpleAir sensors.

All said, it's fantastic that Paku exists at all. I'd gladly pay $10 for this app as it exists today. Add auto-refresh and temperature data and I'd more than willingly pay $20. This app has huge value potential for my daily life. I hope to see it reach that potential one day.

Developer Response ,

Thanks for the great feedback! Since your review, the app has had all the features you've requested added. Hopefully you find it useful - I would really appreciate an updated rating if you have time!

c4aa ,

Extremely useful!

This is a great app for viewing air quality and I like being able to easily see my home purple air sensor readings on the widget! I do wish the messages varied between indoor and outdoor sensors because the messages can be misleading (for example, a couple of days ago the my indoor sensor was reading a pm2.5 of ~ 15 while all the nearby sensors outside were showing pm 2.5 of over 300 due to wildfire smoke, and the message for my sensor said “it’s a great day to be outside!”). However, this is a pretty minor complaint since you can easily see all the sensors on the map, and overall the app works really well.

App Privacy

The developer, Kyle Bashour, 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 Not Linked to You

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

  • Identifiers
  • Usage Data

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

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