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
030012excellentexcellent11excellent
020012excellentexcellent11excellent
010010excellentexcellent11excellent
000013excellentexcellent11excellent
230011excellentexcellent21excellent
22008excellentexcellent21excellent
21007excellentexcellent11excellent
20004excellentexcellent11excellent
19005excellentexcellent11excellent
18009excellentexcellent11excellent
170010excellentexcellent11excellent
160010excellentexcellent11excellent
1500153heavily pollutedexcellent11excellent
1400186heavily pollutedexcellent11excellent
13008excellentexcellent11excellent
120072lightly pollutedexcellent11excellent
1100164heavily pollutedexcellent21excellent
100040goodexcellent11excellent
09009excellentexcellent11excellent
08007excellentexcellent11excellent
07006excellentexcellent11excellent
06006excellentexcellent11excellent
05007excellentexcellent11excellent
04006excellentexcellent11excellent