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
220029goodexcellent51excellent
210032goodexcellent51excellent
200026goodexcellent41excellent
190017excellentexcellent31excellent
180011excellentexcellent21excellent
170010excellentexcellent21excellent
160010excellentexcellent21excellent
150035goodexcellent21excellent
14008excellentexcellent11excellent
13007excellentexcellent11excellent
12009excellentexcellent21excellent
11008excellentexcellent21excellent
10008excellentexcellent21excellent
09007excellentexcellent21excellent
08009excellentexcellent21excellent
070014excellentexcellent21excellent
060013excellentexcellent21excellent
050011excellentexcellent31excellent
040013excellentexcellent31excellent
030012excellentexcellent21excellent
020014excellentexcellent21excellent
010017excellentexcellent31excellent
000026goodexcellent51excellent
230045goodexcellent71excellent