Air quality index [µg/m3]:
excellent ≤ 12
good ≤ 36
lightly polluted ≤ 60
moderately polluted ≤ 84
heavily polluted ≤ 120
severely polluted > 120
PM 2.5
[µg/m3]
PM 10
HOUR OPOLSKA ST. ROOF (BEFORE FILTERS)  AIR SUPPLIED TO OFFICES
130013goodgood321excellent
120015goodexcellent31excellent
110024goodexcellent41excellent
100019goodexcellent31excellent
090035goodexcellent31excellent
080017goodexcellent21excellent
070028goodexcellent21excellent
060020goodexcellent21excellent
050018goodexcellent31excellent
040020goodexcellent21excellent
030018goodexcellent21excellent
020015goodexcellent21excellent
010012excellentexcellent21excellent
000013goodexcellent21excellent
230011excellentexcellent21excellent
220010excellentexcellent21excellent
21008excellentexcellent11excellent
20007excellentexcellent11excellent
19007excellentexcellent11excellent
18006excellentexcellent11excellent
17008excellentexcellent11excellent
160010excellentexcellent11excellent
15009excellentexcellent11excellent
14009excellentexcellent21excellent