# Air Quality Alert: Outdoor — PM2.5 score tuned to family

> PM2.5 score tuned to family (iPhone/iPad app by SiU Ahn.)

- Source: https://appshunter.io/ios/app/air-quality-alert-outdoor/id6771139805 (this page in markdown: same URL + `.md`)
- Developer: [SiU Ahn](https://appshunter.io/developer/1601025745)
- Category: Weather, Health & Fitness
- Price: Free
- Age rating: 4+
- Requires: iOS 13.0 · 34 MB
- Languages: Korean, American English
- Released: 2026-05-22
- Data updated: 2026-09-09
- User reviews in markdown: https://appshunter.io/ios/app/air-quality-alert-outdoor/id6771139805/reviews.md

## What is Air Quality Alert?

Raw PM2.5 numbers rarely answer the question you actually have: "Is it okay to go out right now — with my kid, with my parents, with the dog?" Air Quality Alert turns PM2.5, PM10, and ozone readings into a single 0–100 outdoor score tuned to whoever you're heading out with. One number, one color, decision made.

■ Outdoor score — intuitive, not just a number

We weigh PM2.5 (0.5), PM10 (0.3), and ozone (0.2) against your family's thresholds. At the threshold you'll see 50 (the boundary between "go" and "stay"); double the threshold reads as 0. So "75 today, light walk is fine" becomes a natural call. The score is paired with a four-step color band — Good / Moderate / Bad / Very Bad — so you can read it at a glance, even from a notification.

■ Five family profiles

The same pollutant load affects people differently. The app keeps five profiles, each with its own thresholds:

· Adult — standard reference
· Kid — stricter, more cautious calls
· Pregnant — sensitive-group thresholds
· Elderly — sensitive-group thresholds
· Pet — quick read for walks

Switch profiles with one tap at the top of the home screen.

■ Hourly trend and tomorrow's forecast

PM2.5 and PM10 are plotted hourly so you can see whether the air is getting cleaner or worse. When forecast data is available, the app surfaces tomorrow's best window — "afternoon onward looks best" — so you can plan ahead.

■ Threshold push alerts

Set a PM2.5 threshold; we push when it gets crossed. No need to open the app right before stepping out.

■ Automatic station match

Allow location once, and the app finds the nearest air-quality station for you. Want to check another city? Search and pin any station by name.

■ Data source

Powered by the global station network aggregated by the World Air Quality Index (WAQI) project — the same view works whether you're at home or traveling.

■ Privacy

No sign-up. Profiles, thresholds, and pinned stations live entirely on your device. Location is used only to find the nearest station and is never stored.

Built for the small moment every morning when you crack the window open and wonder whether to grab a mask. Use it on whatever family standard fits today, and step out with one less thing to second-guess.


## Version history (last 4 releases)

### 1.0.3 — 2026-06-14

v1.0.3 update

• Fixed a rare crash on app start related to the persistent color-indicator notification
• Stability improvements

### 1.0.2 — 2026-06-11

v1.0.2 update

• Save multiple stations — add frequent locations as favorites and switch instantly
• Air-quality grade reference + activity guide (ventilation, walks, exercise, camping)
• Grade thresholds shown right on the home screen
• Clearer labels: Korean names beside PM2.5 / PM10
• In-app update support
• Stability improvements

### 1.0.1 — 2026-05-26

v1.0.1 update

• In-app update support — get notified inside the app when a new version is available
• Stability improvements

### 1.0.0 — 2026-05-22

No release notes.

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| App | Rating | Price | Category |
| --- | --- | --- | --- |
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All apps by SiU Ahn: https://appshunter.io/developer/1601025745

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*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-09-09.*