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MOBILE AIR QUALITY SYSTEM (MAQS) v0.8

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PM2.5 AQI Scale

AQI Range PM2.5 (µg/m³) Category
0 – 50 0.0 – 12.0 Good
51 – 100 12.1 – 35.4 Moderate
101 – 150 35.5 – 55.4 Unhealthy for Sensitive Groups
151 – 200 55.5 – 150.4 Unhealthy
201 – 300 150.5 – 250.4 Very Unhealthy
301 – 500 250.5 – 500.4 Hazardous