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
100042goodexcellent11excellent
090021goodexcellent11excellent
080020excellentexcellent11excellent
070012excellentexcellent11excellent
060012excellentexcellent21excellent
050017excellentexcellent11excellent
040021goodexcellent21excellent
030019excellentexcellent21excellent
020020excellentexcellent21excellent
010026goodexcellent21excellent
000016excellentexcellent21excellent
230020excellentexcellent21excellent
220012excellentexcellent11excellent
21006excellentexcellent11excellent
20004excellentexcellent11excellent
19004excellentexcellent11excellent
18002excellentexcellent11excellent
17004excellentexcellent11excellent
16004excellentexcellent11excellent
15002excellentexcellent11excellent
14005excellentexcellent11excellent
13004excellentexcellent11excellent
12006excellentexcellent11excellent
11004excellentexcellent11excellent