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
16008excellentexcellent11excellent
15007excellentexcellent11excellent
14008excellentexcellent11excellent
13008excellentexcellent11excellent
12006excellentexcellent11excellent
11009excellentexcellent11excellent
10009excellentexcellent11excellent
090011excellentexcellent21excellent
080013excellentexcellent21excellent
070015excellentexcellent21excellent
060018excellentexcellent21excellent
050012excellentexcellent21excellent
040012excellentexcellent11excellent
030011excellentexcellent11excellent
020011excellentexcellent11excellent
01008excellentexcellent11excellent
00007excellentexcellent11excellent
23007excellentexcellent11excellent
22007excellentexcellent11excellent
21006excellentexcellent11excellent
20005excellentexcellent11excellent
19003excellentexcellent11excellent
18003excellentexcellent11excellent
17004excellentexcellent11excellent