Instant Air Quality Monitoring & Real-Time Alerts Paku is the best app for PurpleAir, delivering fast, real-time air quality updates at your fingertips. Track air quality index (AQI), temperature, and humidity from PurpleAir sensors, with optional support for AirNow stations for comprehensive data. → Best-in-Class Air Quality Monitoring Paku is fast and lightweight. View hyperlocal, real-time air quality, temperature and humidity from PurpleAir sensors, and enable AirNow stations for additional information. → Gorgeous and Versatile Widgets Configure widgets to show you the nearest sensor, any public sensor, or your own private sensor. Widgets are available for your Home Screen, Lock Screen, Apple Watch, and Mac Desktop. → Real-time Air Quality Alerts Configure alerts for sensors and get real-time push notifications when the AQI exceeds your specified threshold - and when it improves. Whether you live somewhere with frequent wildfires or strong inversions, these notifications can be invaluable. → Live Activities View real-time air quality index and how it’s trending in the Dynamic Island and on the Lock Screen with Live Activities. → Private Sensors Add your private sensors to Paku, and view them on the map, in widgets, or use them with alerts. → System Integration Use the Air Quality Nearby shortcut to view air quality using Siri, Spotlight, or power shortcuts and automations in the Shortcuts app. → iCloud Sync Paku is available on iPhone, Apple Watch, iPad, and Mac for seamless monitoring wherever you are. Your favorites and settings sync to all your devices. → Privacy First Design Your location never leaves the app, and Paku collects no personal information.