*Displays private Maker sites accessed from the "PM2.5 Open Data Portal".
*Support GPS positioning, address positioning, and quickly select the closest station to you.

Compose with App Inventor2
The data is temporarily stored in the /PM25Air/ folder, which can be cleared by itself

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Information source and disclaimer:
The station data is connected from the "PM2.5 Open Data Portal Website":
https://pm25.lass-net.org/
The data are uploaded to the network built by netizens themselves, and I am not responsible for their data or equipment.

Geocoding service using HERE free version service:
https://www.here.com/
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Personal Cloud:
https://cloud.maki0419.com/s/oGLSLqn7b6aaWZa

Personal Blogger:
https://blog.maki0419.com/2019/01/android-app-pm25-airbox-lass.html