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
190017goodexcellent21excellent
180020goodexcellent21excellent
170016goodexcellent31excellent
160016goodexcellent21excellent
150015goodexcellent21excellent
140014goodexcellent21excellent
130015goodexcellent21excellent
120012excellentexcellent21excellent
110017goodexcellent31excellent
100018goodexcellent31excellent
090015goodexcellent31excellent
080017goodexcellent31excellent
070020goodexcellent41excellent
060022goodexcellent41excellent
050021goodexcellent41excellent
040021goodexcellent41excellent
030021goodexcellent41excellent
020022goodexcellent41excellent
010023goodexcellent31excellent
000024goodexcellent41excellent
230023goodexcellent41excellent
220017goodexcellent31excellent
210014goodexcellent21excellent
200013goodexcellent21excellent