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
080043goodexcellent51excellent
070044goodexcellent51excellent
060048goodexcellent41excellent
050045goodexcellent41excellent
040045goodexcellent31excellent
030033goodexcellent31excellent
020029goodexcellent21excellent
010026goodexcellent21excellent
000021goodexcellent21excellent
230018excellentexcellent21excellent
220022goodexcellent11excellent
210010excellentexcellent11excellent
200012excellentexcellent11excellent
19008excellentexcellent11excellent
18009excellentexcellent11excellent
170011excellentexcellent11excellent
160015excellentexcellent11excellent
150010excellentexcellent11excellent
140013excellentexcellent11excellent
130016excellentexcellent21excellent
120021goodexcellent21excellent
110025goodexcellent41excellent
100039goodexcellent51excellent
090055goodexcellent81excellent