Air quality index [µg/m3]:
excellent ≤ 20
good ≤ 60
lightly polluted ≤ 100
moderately polluted ≤ 140
heavily polluted ≤ 200
severely polluted > 200
PM 2.5
[µg/m3]
PM 10
HOUR OPOLSKA ST. ROOF (BEFORE FILTERS)  AIR SUPPLIED TO OFFICES
21005excellentexcellent11excellent
20004excellentexcellent11excellent
19004excellentexcellent11excellent
18002excellentexcellent11excellent
17004excellentexcellent11excellent
16004excellentexcellent11excellent
15002excellentexcellent11excellent
14005excellentexcellent11excellent
13004excellentexcellent11excellent
12006excellentexcellent11excellent
11004excellentexcellent11excellent
10005excellentexcellent11excellent
09007excellentexcellent11excellent
080012excellentexcellent11excellent
070016excellentexcellent21excellent
060033goodexcellent21excellent
050031goodexcellent21excellent
040040goodexcellent21excellent
030059goodexcellent31excellent
020045goodexcellent21excellent
010052goodexcellent21excellent
000051goodexcellent31excellent
230030goodexcellent31excellent
220011excellentexcellent21excellent