PurpleAir PM2.5 Monitor
Air Quality Index (PM2.5)
Good (0-12 μg/m³)
Moderate (12.1-35.4 μg/m³)
Unhealthy for Sensitive (35.5-55.4 μg/m³)
Unhealthy (55.5-150.4 μg/m³)
Very Unhealthy (150.5-250.4 μg/m³)
Hazardous (250.5+ μg/m³)
Stale Data (>24 hours)