European Common Air Quality Index (CAQI)

PM 2.5
0 - 15	0 - 25
15 - 30	25 - 50
30 - 55	50 - 75
55 - 110	75 - 100
110 - 200	100 - 150
PM 10
0 - 25	0 - 25
25 - 50	25 - 50
50 - 90	50 - 75
90 - 180	75 - 100
180 - 360	100 - 150

• European Environment Agency (EEA) - CAQI
• Wikipedia - Air Quality Index (splošno)
• ARSO - Kakovost zraka v Sloveniji