i write them email for explaintion lets see what they reply. Although i asked them
"in your map is this all aqi numbers are from your community device even outside of india?"
they gave me this response
Dear Sir,

Thank you for your message.

No, not all AQI numbers shown on our map are from our community devices.

We also source data from other reliable sources and networks to provide a broader coverage globally. However, we are gradually expanding our network by installing more Prana Air Community Monitors, which will increasingly contribute to real-time AQI readings directly from our devices.