Air quality index [µg/m3]:
excellent ≤ 12
good ≤ 36
lightly polluted ≤ 60
moderately polluted ≤ 84
heavily polluted ≤ 120
severely polluted > 120
PM 2.5
[µg/m3]
PM 10
HOUR OPOLSKA ST. ROOF (BEFORE FILTERS)  AIR SUPPLIED TO OFFICES
230025goodexcellent41excellent
220024goodexcellent51excellent
210018goodexcellent21excellent
20009excellentexcellent11excellent
19007excellentexcellent11excellent
180012excellentexcellent21excellent
17006excellentexcellent11excellent
16005excellentexcellent11excellent
15004excellentexcellent11excellent
14006excellentexcellent11excellent
13006excellentexcellent11excellent
12007excellentexcellent21excellent
110012excellentexcellent21excellent
100013goodexcellent31excellent
090018goodexcellent31excellent
080011excellentexcellent21excellent
070011excellentexcellent11excellent
06007excellentexcellent11excellent
05007excellentexcellent11excellent
04005excellentexcellent11excellent
03003excellentexcellent11excellent
02003excellentexcellent11excellent
01005excellentexcellent11excellent
00008excellentexcellent11excellent