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
030011excellentexcellent11excellent
020011excellentexcellent11excellent
01008excellentexcellent11excellent
00007excellentexcellent11excellent
23007excellentexcellent11excellent
22007excellentexcellent11excellent
21006excellentexcellent11excellent
20005excellentexcellent11excellent
19003excellentexcellent11excellent
18003excellentexcellent11excellent
17004excellentexcellent11excellent
16004excellentexcellent11excellent
150038goodexcellent11excellent
14006excellentexcellent11excellent
130022goodexcellent11excellent
12008excellentexcellent11excellent
11008excellentexcellent11excellent
100010excellentexcellent11excellent
090013excellentexcellent11excellent
080018excellentexcellent21excellent
070020excellentexcellent31excellent
060020excellentexcellent21excellent
050019excellentexcellent21excellent
040018excellentexcellent21excellent