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
070045lightly pollutedexcellent81excellent
060044lightly pollutedexcellent71excellent
050036goodexcellent61excellent
040031goodexcellent51excellent
030030goodexcellent51excellent
020036goodexcellent61excellent
010045lightly pollutedexcellent81excellent
000046lightly pollutedexcellent61excellent
230038lightly pollutedexcellent71excellent
220033goodexcellent61excellent
210029goodexcellent51excellent
200020goodexcellent41excellent
190016goodexcellent41excellent
180014goodexcellent31excellent
170012excellentexcellent31excellent
160012excellentexcellent31excellent
150014goodexcellent31excellent
140015goodexcellent41excellent
130018goodexcellent51excellent
120020goodexcellent51excellent
110023goodexcellent71excellent
100040lightly pollutedexcellent111excellent
090054lightly pollutedgood141excellent
080065moderately pollutedgood141excellent