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
170011excellentexcellent11excellent
160013excellentexcellent11excellent
150013excellentexcellent21excellent
140013excellentexcellent21excellent
130020excellentexcellent21excellent
120014excellentexcellent31excellent
110013excellentexcellent21excellent
100018excellentexcellent31excellent
090021goodexcellent31excellent
080033goodexcellent41excellent
070032goodexcellent51excellent
060026goodexcellent41excellent
050022goodexcellent31excellent
040020excellentexcellent31excellent
030016excellentexcellent21excellent
020017excellentexcellent21excellent
010024goodexcellent31excellent
000032goodexcellent41excellent
230025goodexcellent31excellent
220021goodexcellent31excellent
210012excellentexcellent11excellent
200011excellentexcellent11excellent
19007excellentexcellent11excellent
180031goodexcellent21excellent