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
170010excellentexcellent11excellent
160010excellentexcellent11excellent
150015goodexcellent21excellent
140020goodexcellent31excellent
130017goodexcellent21excellent
120021goodexcellent31excellent
110020goodexcellent31excellent
100023goodexcellent31excellent
090026goodexcellent31excellent
080024goodexcellent21excellent
070021goodexcellent21excellent
060018goodexcellent21excellent
050034goodexcellent51excellent
040036goodexcellent51excellent
030030goodexcellent41excellent
020025goodexcellent31excellent
010023goodexcellent31excellent
000022goodexcellent21excellent
230026goodexcellent31excellent
220030goodexcellent41excellent
210027goodexcellent31excellent
200025goodexcellent31excellent
190018goodexcellent21excellent
180014goodexcellent21excellent