Area 51

Building Indoor AQI
Nearby Outdoor AQI

Air Quality Index (AQI) Explanations
Daily AQI Color Levels of Concern Values of Index
Green Good 0-50
Yellow Moderate 51-100
Orange Unhealthy for Sensitive Groups 101-150
Red Unhealthy 151-200
Purple Very Unhealthy 201-300
Maroon Hazardous 301 and higher