Screenshot showing a map of San Francisco with PurpleAir sensors showing air quality on the map.

Like a breath of fresh air

Fast and lightweight, Paku loads every sensor on the map instantly.

More than AQI

Real-time, hyperlocal temperature and humidity – on the map and in widgets.

Screenshot showing a map of San Francisco with PurpleAir sensors showing humidity on the map. An open menu shows the option to choose from air quality, temperature, or humidity.

Screenshot of the app settings showing various alerts configured for sensors.

Stay in the Know

Set up alerts and get real-time notifications when air quality goes south.

Everything Else

Favorites. Private sensors. watchOS and macOS support. Paku can do it all. Missing a feature you’d like? Reach out ↗

Screenshot of a favorites list that displays data from favorited sensors.

In the Press

The Washington Post: Best apps to check air quality near you ↗

SixColors: Getting a handle on outdoor air quality ↗

Macworld: The best apps with Lock Screen widgets ↗

MacRumors: Apps that have added iOS 16 Lock Screen widget support ↗

Berkeley Air: Paku has revolutionized PurpleAir ↗

Made with ♥ in Portland