Hale

For AirGradient monitors · iPhone

The air at home, in one sentence.

Hale reads your AirGradient monitors straight off your Wi-Fi and tells you which room needs attention, how bad it is, and the one thing to do about it.

One number. One sentence. One thing to do.

Coming soon to the App Store

See how it works

Reading your own monitors is free. No account. Nothing collected.

Hale's Home tab: the Living Room is the worst room at 844 ppm of CO₂, moderate, and the action is Open a window.

Worst room · Bedroom

940 Moderate ppm · CO₂

CO₂ is 940 ppm and outdoor air is cleaner than inside.

Open a window

Local first

It asks the monitor, not the internet.

Your AirGradient already serves its readings on your home network. Hale finds it on its own and reads it directly, so the number on your screen is seconds old, not minutes.

At home, iPhone and monitor talk directly over Wi-Fi. Away, Hale reads the same monitor through AirGradient's cloud. only when you're away · optional token your Wi-Fi iPhone AirGradient direct · no account · works offline
No account
Hale finds monitors with Bonjour, the way your iPhone finds a printer. Nothing to sign up for.
Live
A reading comes straight from the monitor in under a second, every time you look.
Off the grid
If the internet or AirGradient's servers go down, the readings at home keep coming.
Away too
Add your AirGradient API token and the same screens work from anywhere. It's optional and stays in your Keychain.

The point is the Home Screen

If it isn't on your Home Screen, you won't look at it.

Three widget families: the verdict, a dial per room, and the day as a strip. Each comes in every size, on the Home Screen and the Lock Screen. Pick a room, or leave it empty and the worst room wins.

The small widget is free. The other sizes and the Lock Screen are part of Hale Pro.

Every channel, explained

Numbers you can act on, not a wall of them.

Each room opens on its readings, today in a sentence, and a page per channel: CO₂, PM2.5, PM10, PM1, VOC, NOx, temperature and humidity. You get today's low, high and trend, the week as a heatmap, and a plain answer to "what raises this at home?"

The Living Room's page: eight current readings as coloured tiles, then today in a sentence: under 1,000 ppm all day, averaging 579 ppm, rising over the last hour.

Colors that already mean something

Hale uses the EPA's air quality colors and its 2024 breakpoints, so green means good and red means act, on every screen and widget.

  1. Good0–50
  2. Moderate51–100
  3. Sensitive groups101–150
  4. Unhealthy151–200
  5. Very unhealthy201–300
  6. Hazardous301+

Privacy

Hale collects nothing.

  • No account, no analytics, no ads, no third-party code.
  • Readings, history and settings stay on your iPhone.
  • Your location is used once, on the phone, to find the nearest outdoor monitor. It is never stored or sent.
  • If Hale crashes, the report stays on your iPhone unless you choose to email it to us.
Read the privacy policy

Pricing

Reading your own monitors is free.

Free

  • Live readings from every monitor you own
  • History, charts, heatmaps and comparisons
  • The world map of public outdoor monitors
  • The small Home Screen widget

Hale Pro

  • Alerts when a room crosses your threshold
  • Home actions: pair an alert with a scene, fan, purifier or plug
  • Medium, large and Lock Screen widgets
  • Siri and Shortcuts
Monthly$0.99
Yearly 1-week free trial$9.99
Lifetime pay once$19.99

Family Sharing on every option. US prices; the App Store shows yours.

Support

Questions

Which monitors does Hale work with?

AirGradient's indoor ONE and outdoor Open Air monitors. Hale finds them by itself when your iPhone is on the same Wi-Fi.

Do I need an AirGradient account?

No. At home Hale reads the monitors directly. An AirGradient API token is optional, and only needed to see your readings when you're away.

What do the colors and numbers mean?

Particles are shown as the US EPA's Air Quality Index (2024 revision). CO₂, VOC, NOx and humidity use their own scales, colored the same way so a band means the same thing everywhere. Every channel has a "What is this?" page in the app.

Is Hale made by AirGradient?

No. Hale is an independent app by Taylored Labs. It works with AirGradient monitors and shows AirGradient's public outdoor map, but it isn't affiliated with or endorsed by AirGradient.

When can I get it?

Soon. Hale is in its final round of testing before it goes to the App Store.

Something else? Email support@haleair.app.