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A simple way to get air quality and pollution information, help you to protect yourself from air pollutions.

Based on your real-time location, this app can list out an overview of nearby monitoring stations with latest AQI (Air Quality Index), and data of each pollutants if available, like PM 2.5, PM10, CO, Ozone, NO2, etc. Alternatively, data can also be viewed on maps.

As of now, data covers thousands of stations around world, and is counting. Currently, this app only support U.S. AQI standard and China AQI standard for calculating AQI. Will try to support more world-wide standards in future.

All air quality related data are automatically collected from worldwide environmental protection agencies, data are NOT verified or validated, and is for your personal reference only.

By using this app, you agree to the Terms Of Use, Privacy Policy and Data Use Terms: https://diaohs.com/legal

What’s New

Version 2.0.0

Support China standard for calculating AQI.

App Privacy

The developer, Hongsheng DIAO, has not provided details about its privacy practices and handling of data to Apple. For more information, see the developer’s privacy policy.

No Details Provided

The developer will be required to provide privacy details when they submit their next app update.


  • Family Sharing

    With Family Sharing set up, up to six family members can use this app.

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