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
13004excellentexcellent11excellent
12006excellentexcellent11excellent
11004excellentexcellent11excellent
10005excellentexcellent11excellent
09007excellentexcellent11excellent
080012excellentexcellent11excellent
070016excellentexcellent21excellent
060033goodexcellent21excellent
050031goodexcellent21excellent
040040goodexcellent21excellent
030059goodexcellent31excellent
020045goodexcellent21excellent
010052goodexcellent21excellent
000051goodexcellent31excellent
230030goodexcellent31excellent
220011excellentexcellent21excellent
210011excellentexcellent11excellent
20007excellentexcellent11excellent
19006excellentexcellent11excellent
18008excellentexcellent11excellent
17008excellentexcellent11excellent
160013excellentexcellent11excellent
150080lightly pollutedexcellent11excellent
140013excellentexcellent11excellent