ECOWITT WH45 - Appendix

15
8. Appendix
Air Quality Index (AQI) for the PM2.5 Concentration
(24hr)
AQI
Air Pollution Level
PM2.5 Concentration
ug/m3
0 - 50
Good
0.0-12.0
51 -100
Moderate
12.1-35.4
101-150
Poor
35.5-55.4
151-200
Unhealthy
55.5-150.4
201-300
Severe
150.5-250.4
300+
Hazardous
250.5+