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
220011excellentexcellent21excellent
210011excellentexcellent21excellent
200011excellentexcellent21excellent
190010excellentexcellent21excellent
18007excellentexcellent11excellent
17008excellentexcellent11excellent
16006excellentexcellent11excellent
15008excellentexcellent11excellent
14007excellentexcellent11excellent
13009excellentexcellent21excellent
12009excellentexcellent21excellent
110017goodexcellent31excellent
100016goodexcellent41excellent
090022goodexcellent51excellent
080031goodexcellent51excellent
070032goodexcellent51excellent
060025goodexcellent41excellent
050022goodexcellent41excellent
040021goodexcellent41excellent
030023goodexcellent41excellent
020022goodexcellent31excellent
010020goodexcellent31excellent
000024goodexcellent31excellent
230023goodexcellent31excellent