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
050012excellentexcellent11excellent
040018excellentexcellent21excellent
030018excellentexcellent21excellent
020024goodexcellent21excellent
010019excellentexcellent21excellent
000015excellentexcellent21excellent
230018excellentexcellent21excellent
220014excellentexcellent21excellent
210014excellentexcellent21excellent
200012excellentexcellent11excellent
19005excellentexcellent11excellent
18004excellentexcellent11excellent
17004excellentexcellent11excellent
16003excellentexcellent11excellent
15004excellentexcellent11excellent
14003excellentexcellent11excellent
13003excellentexcellent11excellent
12003excellentexcellent11excellent
11004excellentexcellent11excellent
10005excellentexcellent11excellent
09007excellentexcellent11excellent
080012excellentexcellent21excellent
070018excellentexcellent31excellent
060021goodexcellent41excellent