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
210019excellentexcellent11excellent
200015excellentexcellent11excellent
190012excellentexcellent11excellent
18009excellentexcellent11excellent
170087lightly pollutedexcellent11excellent
160014excellentexcellent21excellent
150026goodexcellent21excellent
140028goodexcellent31excellent
130025goodexcellent21excellent
120021goodexcellent31excellent
110031goodexcellent41excellent
100035goodexcellent51excellent
090042goodexcellent51excellent
080041goodexcellent51excellent
070044goodexcellent51excellent
060048goodexcellent41excellent
050045goodexcellent41excellent
040045goodexcellent31excellent
030033goodexcellent31excellent
020029goodexcellent21excellent
010026goodexcellent21excellent
000021goodexcellent21excellent
230018excellentexcellent21excellent
220022goodexcellent11excellent