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
070018excellentexcellent41excellent
060021goodexcellent41excellent
050018excellentexcellent31excellent
040015excellentexcellent21excellent
03009excellentexcellent11excellent
020016excellentexcellent41excellent
010020excellentexcellent31excellent
000016excellentexcellent31excellent
230014excellentexcellent21excellent
220011excellentexcellent21excellent
21008excellentexcellent21excellent
20008excellentexcellent11excellent
19008excellentexcellent11excellent
18006excellentexcellent11excellent
17005excellentexcellent11excellent
16006excellentexcellent11excellent
15005excellentexcellent11excellent
14004excellentexcellent11excellent
13003excellentexcellent11excellent
12007excellentexcellent11excellent
11005excellentexcellent11excellent
10007excellentexcellent11excellent
09008excellentexcellent11excellent
080010excellentexcellent31excellent