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
150030goodexcellent21excellent
140032goodexcellent21excellent
130034goodexcellent31excellent
120034goodexcellent41excellent
110097lightly pollutedexcellent31excellent
100030goodexcellent31excellent
090029goodexcellent41excellent
080026goodexcellent41excellent
070028goodexcellent41excellent
060029goodexcellent41excellent
050031goodexcellent41excellent
040025goodexcellent51excellent
030024goodexcellent41excellent
020025goodexcellent31excellent
010022goodexcellent21excellent
000021goodexcellent21excellent
230021goodexcellent21excellent
220020excellentexcellent21excellent
210014excellentexcellent11excellent
200012excellentexcellent11excellent
190011excellentexcellent11excellent
180012excellentexcellent21excellent
170015excellentexcellent21excellent
160021goodexcellent21excellent