AppCorpus
Market US

Paku - Air Quality & AQI Map

by Pitou Technologies, LLC

iPhone · iPad

Active Last checked 30 Aug 2026

Quick verdict

What it is
Store information collected; independent summary not yet available.
At a glance
  • From $1.99/mo
  • Free to download
  • In-app purchases

Categories and search queries

Official categories

AppCorpus categories

Key functions

Function Availability Access Scope Evidence
Family Sharing Yes Unknown App Store Store published
Free app Yes Free Store published
In-app purchases Yes Limited free Store published

Screens

App Store

32 store screenshots

Paku - Air Quality & AQI Map ipad screenshot 1
Paku - Air Quality & AQI Map ipad screenshot 2
Paku - Air Quality & AQI Map ipad screenshot 3
Paku - Air Quality & AQI Map ipad screenshot 4

Pricing & paywalls

App Store

  • Monthly Subscription — $1.99/month
  • Monthly Subscription — $13.99/year ($1.16/mo)
  • Burrito-sized tip — $8.99
  • Coffee-sized tip — $3.99
  • Lifetime Unlock — $89.99
  • Pizza-sized tip — $24.99

Ratings & reviews

App Store

4.7 10925 ratings · App Store

  1. 5/5Atmospheric chemist here, this is a pretty good app

    Good connectivity and the widget apps for the pro option are very nice. Interface is very user friendly and the updates are quite quick. The ~$1/month membership for an annual price seems very fair. I think my colleagues and I would really enjoy seeing an option to display both PM 1 and PM 2.5 data (especially as a widget option!). Purple air offers this publicly but AQI tends to be the preferred public option for good reason. I think as indoor air quality becomes more prevalent as an issue, things will get more nuanced. Usage of indoor air quality sensors have been increasing quite rapidly, the new IKEA ones are going to further this even more. In one of our recent papers, I think the number of indoor sensors doubled every two years. I would suggest looking to eventually incorporate a user friendly page on the app (or as a widget) that can incorporate multiple air sensors in one location (outdoor, kitchen, bedroom, etc). And possibly even other sensor companies. Very nice app! Great job on it.

    Mike276437832 · 30 Aug 2026

  2. 5/5Finally 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.

    @Magnuson · 30 Aug 2026

  3. 5/5Everything I want for air quality monitoring

    Seriously impressed by this app. It’s the perfect companion to my PurpleAir outdoor sensor. With the addition today of subscription push alerts when air quality exceeds a defined level at a sensor, I’m struggling to think of any other features that I’m really missing. The quality of the app easily justifies the small subscription cost. I love the widgets on my Lock Screen too. The only missing feature that springs to mind is a list view of sensors rather than the map view. The map view is great for panning around my area but I have family and friends spread around the country and it would be nice to see air quality/temp/humidity for a list of locations at a glance.

    Nickscave · 30 Aug 2026

  4. 5/5Good 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.

    @Magnuson · 30 Aug 2026

  5. 5/5Usually, it’s great

    I love purple air, especially doing wildfire season. And I look looking at the air and the rest of the world also. But it doesn’t seem to be working right today. I am 23 miles away from the forest fire and it has been quite smoky here. But the dot near my tiny town shows green and that it is at 20. But reading the text it says air quality is 158. That is a big difference. I live in Northern California and I looked up to Oregon where I know there are a lot of fires, and showing green today also. So please fix this. Oherwise I would give it five stars.

    Salmon river woman · 30 Aug 2026

Privacy & accessibility

App Store

Privacy

  • Data Not Linked to You — Analytics — Identifiers — Device ID Developer declared
  • Data Not Linked to You — Analytics — Usage Data — Product Interaction Developer declared
  • Data Not Linked to You — Identifiers Developer declared
  • Data Not Linked to You — Usage Data Developer declared

Accessibility

  • Dark Interface — SUPPORTED Store published
  • Differentiate Without Color Alone — SUPPORTED Store published
  • Larger Text — SUPPORTED Store published
  • Sufficient Contrast — SUPPORTED Store published
  • Voice Control — SUPPORTED Store published
  • VoiceOver — SUPPORTED Store published

Versions

App Store

  • 5.10.0

    → Improved Live Activity layout on watchOS.

  • 5.11.0

    → improved visualization of data when zoomed out.

  • 5.11.1

    → Improved visualization of data when zoomed out. → This new visualization can be toggled off in settings using "Blur When Zoomed Out"

  • 5.11.2

    → Increase the zoom level at which sensors will blur. → Some small bug fixes.

  • 5.11.3

    → Small bug fixes.

  • 5.11.4

    → Fixes an issue where the wrong averaging period was used in some cases.

  • 5.11.5

    → You may have already noticed, but you’ll now get notified when a sensor with an alert set up is offline for more than an hour. → While working on the above, push notifications were slightly broken for about a day (sorry about that!) - all is fixed now. → Includes a fix for a rare crash.

  • 5.12.0

    This update brings a brand new App Intent with support for getting real-time data for any data point supported by Paku from any sensor. This means you can access that data in Shortcuts, through Siri, with the Action Button, and more.

  • 5.12.1

    → Use the pin-style annotations when zoomed in.

  • 5.13.0

    → Adds support for Canadian AQHI+

  • 5.13.1

    → AQHI+ support in widgets.

  • 5.13.2

    → Fixes a bug where the temperature value returned in Shortcuts was always in Fahrenheit.

  • 5.9.4

    → Fixes an issue in the AQI widget where the gauge was rendered without its gradient. → Under the hood improvements to keep things running smoothly.

  • 5.9.5

    → Added dark mode support to the Cappuccino, Blueprint, and Six Colors app icons.

  • 5.9.6

    Fixes a bug where data in the main app used the widget averaging period instead of real-time data.

  • 5.9.7

    → Fixes an issue where menu buttons on the map did not update when changing selection.

  • 5.9.8

    → Under the hood improvements to keep things running smoothly.

  • 5.9.9

    → AirNow sites will no longer display data when it becomes stale. This should mitigate another issue where the data is not updated sometimes, which I’m still tracking down.

  • 6.0

    → This update includes support for iOS and watchOS 26, with a beautiful new Liquid Glass design.

  • 6.0.1

    → This update includes support for iOS and watchOS 26, with a beautiful new Liquid Glass design.

  • 6.1.0

    → Bug fixes and improvements. More coming soon I hope!

  • 6.1.1

    Fixes a bug where the location button did not work on iPad, and sensors would not load until the map was manually panned.

  • 6.1.2

    → Fixes an issue where widgets failed to load on watchOS.

  • 6.1.3

    → An improved Smart Select algorithm should pick a more accurate "nearby" sensor in some cases. Please reach out if you see any regressions here!

  • 6.2.1 · 18 Jul 2026

    → Nearby air quality alerts: enable location-based alerts and Paku will monitor your surroundings, picking the closest sensor on-device and notifying you when it exceeds your threshold. Your location never leaves your device. → AirNow sensors now report all supported pollutants, and display the highest one. → Improvements to Smart Select for more accurate readings. → Various bug fixes and improvements.

  • 7.0.2

    ## New - Readings now blend into a heatmap layer when zoomed out, making it easier to understand air quality across a large area. - Live Activities are redesigned with a history chart, can start automatically when AQI crosses a threshold, and are now updated by the server — so they stay fresh while you're stationary or after the app is closed, and follow the nearest sensor as you move. - AirNow sites show PM2.5, PM10, and ozone readings, use a government building icon, and open a full detail sheet with per-pollutant readings and EPA guidance. - Alerts notify you again each time air quality reaches a more serious level, not just the first time it crosses your threshold. - The app checks for new PurpleAir sensors on every launch instead of once a week. - Sensors and places you search for are saved as recent searches. - Updated Mac layout, with sensor details open in a floating panel next to the sidebar. ## Improved - VoiceOver and Dynamic Type support have been greatly improved, and map markers now grow with your text size. - Voice Control users can open favorites, nearby sensors, and search results by speaking the sensor or place name. - The map re-centers on your location when you return after being away for a while. - Indoor sensors are marked with a gray ring instead of a house icon, similar to the PurpleAir website. - Sensors fade as their confidence drops — on the map and in charts — so you still see the reading and its color instead of flat gray. - Map pins abbreviate extreme AQI values, condense wide readings, and have improved contrast. - The sensor detail screen is redesigned, with actions in a new bottom toolbar, distance to the sensor, and an indicator when channels are downgraded. - The map no longer jumps around when opening sensor details. - Chart data binning is improved, so spikes remain visible instead of being smoothed out. - Trend arrows are more accurate, and react to changing values more quickly. - Tapping the Live Activity on Apple Watch opens the Paku watch app. - Widget configuration has been improved, and the sensor picker now suggests your favorites and nearby sensors. - Readings hovering around your threshold no longer ping-pong between bad-air and improvement alerts. - Nearby sensors are picked from within a 10 mile radius (down from 30 miles), so widgets, Siri, alerts, and the menu bar show more relevant readings. - Smart Select no longer falsely flags sensors as outliers or ping-pongs between sensors with similar readings. - Nearby alerts and the Live Activity share one location monitor, so running both costs half as much battery. - Improved sensor detail layout on Apple Watch, and the watch widget can now surface automatically in the Smart Stack. - On iPad, Settings presents as a narrower centered sheet, and selecting a sensor in portrait centers it above the sheet. - Readings update more frequently, and search, sensor details, and Live Activities no longer hitch while loading. - Private sensors now show hardware IDs, when each was last seen, and a status tag. - Settings are reorganized around new Map Display and AQI Settings pages. - Offer codes can be redeemed from within the app. ## Fixed - Fixed an issue where a sensor opened via a push notification or widget would fail to load. - Fixed the map going blank after changing settings, pins showing stale or cached readings, and sensors lingering from areas you had panned away from. - Fixed temperature gauges pointing at the wrong spot in widgets, and the temperature trend arrow being stuck for people using Celsius. - Fixed map search matching sensors differently than alerts, the watch app, and widgets. - Fixed the App Store review prompt asking too often. - Mac: the menu bar app starts from your last known location, refreshes reliably while loading, and quitting it now turns off the setting instead of coming back at the next login. - Countless small bug fixes and performance improvements.

  • 7.0.3

    - Sharing a sensor now sends a link to the sensor with a live AQI reading instead of a screenshot. - Sharing from the favorites sheet sends a link to your nearby sensor instead of a screenshot. - Air quality alerts are now delivered as time-sensitive notifications, so alerts arrive even while a Focus is on. - Sensor and nearby alerts now always follow the app-wide correction setting; the per-alert correction option in alert settings has been removed. - If a subscription is still active alongside a lifetime unlock, the membership screen now lists it with a reminder to cancel so you aren’t charged again. - Returning to the app no longer briefly shows sensors as offline.

  • 7.0.4

    - Adds support for nicknaming sensors.

  • 7.0.5 · 20 Aug 2026

    - Your private sensors are now picked up by nearby alerts and live activities. - Private sensors show up in search results.

  • 7.1.0 · 28 Aug 2026

    - AirGradient’s worldwide network of open-source monitors now appears anywhere PurpleAir sensors do — the map, search, favorites, alerts, widgets, Live Activities, and Siri — with the same details and charts. - A new Data Sources screen in Settings allows you to manage which networks you want to use. - Charts in sensor details now support scrubbing through history by touching and dragging. - Nearby sensors are picked from within a 15 mile radius (up from 10), so widgets, Siri, alerts, and Live Activities show a reading more often. - The Live Activities settings screen has a Start Live Activity button, and the map menu disables Start Live Activity when no sensors are nearby instead of failing after you tap it. - The subtitle in sensor details now shows the data source icon. - Several small bug fixes and performance improvements.

Alternatives

Availability by market

Data quality & evidence

Page completeness
Live store listing
Last verified
30 Aug 2026
Sources
App Store

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