# TOKYO大気情報

> Tokyo air quality monitoring and visualization app. (iPhone/iPad app by Tokyo Metropolitan Government.)

- Source: https://appshunter.io/ios/app/tokyo/id6479474175 (this page in markdown: same URL + `.md`)
- Developer: [Tokyo Metropolitan Government](https://appshunter.io/developer/616616621)
- Category: Lifestyle
- Price: Free
- Rating: 5.00/5 from 1 App Store ratings
- Age rating: 4+
- Requires: iOS 17.3.1 · 22 MB
- Languages: Japanese
- Released: 2025-03-03
- Data updated: 2026-08-13
- Monetization: free
- User reviews in markdown: https://appshunter.io/ios/app/tokyo/id6479474175/reviews.md

## What is TOKYO大気情報?

東京都が測定している大気環境モニタリングデータを用いて、大気汚染物質の濃度を時系列に沿って表示することができます。


【主要な機能】


●経時変化グラフ

大気汚染物質の濃度を時系列順に閲覧することが可能です。
濃度はスマートフォンの位置情報を基にして、近隣の測定局で測定された値で近似的に算出しています。


●パラメータ設定

経時変化グラフの表示に関連する各種パラメータを設定できます。


【注意事項】

本アプリはスマートフォンの位置情報を継続的に取得することでサービスを提供しているため、
下記の方法で正しく利用してください。
	・スマートフォンの位置情報サービスをオンにする。
	・本アプリの位置情報の利用を「常に許可」する。
	・本アプリを表示しない時はバックグラウンドで起動しておく。

## Key features

- Real-time air pollution data
- Time-series concentration graphs
- Location-based data approximation
- Customizable display parameters
- Air quality monitoring


## Frequently asked questions about TOKYO大気情報

### How does TOKYO大気情報 estimate air pollution levels?

TOKYO大気情報 uses your smartphone's location to approximate pollutant concentrations measured at nearby air quality monitoring stations operated by the Tokyo Metropolitan Government.

### What kind of air pollutants does TOKYO大気情報 track?

The app displays the concentration of various air pollutants over time, based on the data collected by Tokyo's air environment monitoring network.

### Do I need to enable location services for TOKYO大気情報 to work?

Yes, continuous access to your smartphone's location information is required for the app to provide its services accurately. You should enable location services and set the app's location permission to 'Always allow'.

### Is TOKYO大気情報 available on Android devices?

Currently, TOKYO大気情報 is only supported on iPhone devices. The app's platform compatibility is limited to iOS.

### How often is the data in TOKYO大気情報 updated?

The app utilizes data from Tokyo's air environment monitoring network. While the app itself was last updated on January 19, 2026, the underlying air quality data is continuously collected and displayed.

### What is the age rating for TOKYO大気情報?

TOKYO大気情報 has an age rating of 4+, making it suitable for a wide range of users.

### Does TOKYO大気情報 have ads?

No, TOKYO大気情報 does not contain advertisements. It is a free application provided by the Tokyo Metropolitan Government.

### Can I view historical air quality data with TOKYO大気情報?

Yes, the app allows you to view the concentration of air pollutants in a time-series graph, enabling you to track changes over time.

## Version history (last 3 releases)

### 1.1.1 — 2026-01-19

アプリ情報調整：
・互換性：iOS 17.3.1以降
・言語：日本語

### 1.1 — 2025-03-26

アプリ情報調整：
・互換性：iOS 17.3.1以降
・言語：日本語

### 1.0 — 2025-03-04

No release notes.

## More apps by Tokyo Metropolitan Government

- [TokyoParksNavi](https://appshunter.io/ios/app/tokyoparksnavi/id1088801764)
- [こころ空模様チェック](https://appshunter.io/ios/app/id1212188279)
- [こころストーリー（いじめ相談・SNS）](https://appshunter.io/ios/app/sns/id1212202342)
- [Disaster Preparedness TokyoApp](https://appshunter.io/ios/app/disaster-preparedness-tokyoapp/id1290558619)
- [とうきょう子育てスイッチアプリ](https://appshunter.io/ios/app/id1340023156)
- [TOKYOテレワークアプリ](https://appshunter.io/ios/app/tokyo/id1478850975)

All apps by Tokyo Metropolitan Government: https://appshunter.io/developer/616616621

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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 2026-08-13.*