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
090024goodexcellent41excellent
080027goodexcellent41excellent
070025goodexcellent41excellent
060021goodexcellent41excellent
050027goodexcellent31excellent
040025goodexcellent31excellent
030042goodexcellent41excellent
020023goodexcellent41excellent
010017excellentexcellent31excellent
000025goodexcellent41excellent
230025goodexcellent31excellent
220029goodexcellent31excellent
210017excellentexcellent21excellent
20008excellentexcellent11excellent
19003excellentexcellent11excellent
18003excellentexcellent11excellent
17005excellentexcellent11excellent
16006excellentexcellent11excellent
15005excellentexcellent11excellent
14005excellentexcellent11excellent
130010excellentexcellent21excellent
120015excellentexcellent31excellent
110016excellentexcellent41excellent
100020excellentexcellent41excellent