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
230014excellentexcellent31excellent
220017excellentexcellent41excellent
210018excellentexcellent31excellent
200014excellentexcellent21excellent
190011excellentexcellent21excellent
18009excellentexcellent11excellent
170010excellentexcellent11excellent
16006excellentexcellent11excellent
15009excellentexcellent21excellent
14009excellentexcellent11excellent
130011excellentexcellent21excellent
120014excellentexcellent21excellent
110014excellentexcellent21excellent
100019excellentexcellent21excellent
090029goodexcellent31excellent
080034goodexcellent51excellent
070041goodexcellent51excellent
060038goodexcellent51excellent
050033goodexcellent41excellent
040032goodexcellent31excellent
030032goodexcellent31excellent
020026goodexcellent21excellent
010026goodexcellent31excellent
000027goodexcellent31excellent