なかなか良いです。
米国と欧州の基準で地元の大気指数の
履歴を見られるので、空気にこだわる
人に良いと思います。
履歴を見られるので、空気にこだわる
人に良いと思います。
Free
About
Provides real-time air quality information based on US and European Air Quality Index (AQI) standards. It forecasts pollutant levels for up to five days, including carbon monoxide, ozone, nitrogen dioxide, sulfur dioxide, PM2.5, and PM10.
✓Real-time AQI reporting
✓US and European AQI standards
✓Forecasts for 6 pollutants
✓5-day pollutant forecasts
✓Color-coded risk levels
✓Pollutant concentration data
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What's New in O2Quality
2.6
September 14, 2026
iOS/iPadOS 27で安定稼働するよう細かな修正を行い動作確認を実施済。 各画面とUI部品を対象に固定幅へ寄せず可変レイアウトに対応できるよう改修。 その他細かな改良、バグフィックスを実施。
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FAQ
What is O2Quality?
O2Quality provides real-time air quality information based on US and European Air Quality Index (AQI) standards. It forecasts pollutant levels for up to five days, including carbon monoxide, ozone, nitrogen dioxide, sulfur dioxide, PM2.5, and PM10.
What data sources does O2Quality use?
O2Quality utilizes weather data from Open-Meteo.com. All data is provided as is without any warranty.
Does O2Quality have ads?
No, O2Quality does not contain advertisements.
What pollutants does O2Quality track?
O2Quality tracks six types of pollutants: Carbon Monoxide, Ozone, Nitrogen dioxide, Sulphur dioxide, PM2.5, and PM10.
What is the AQI scale used by O2Quality?
O2Quality uses a 10-level Air Quality Index (AQI) defined by US and European standards, presented with numerical risk levels, summaries, and color-coded indicators.
What devices is O2Quality available on?
O2Quality is available on Mac, iPhone, and iPad.
How often is O2Quality updated?
The latest version of O2Quality is 2.5, and it was last updated on September 19, 2025.
Is O2Quality suitable for children?
O2Quality has an age rating of 4+, making it suitable for children.
