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
090018goodexcellent31excellent
080015goodexcellent31excellent
070014goodexcellent21excellent
060012excellentexcellent21excellent
050012excellentexcellent21excellent
040010excellentexcellent21excellent
030011excellentexcellent31excellent
020012excellentexcellent31excellent
010014goodexcellent31excellent
000017goodexcellent31excellent
230011excellentexcellent31excellent
220013goodexcellent31excellent
210016goodexcellent31excellent
200015goodexcellent41excellent
190024goodexcellent51excellent
180024goodexcellent51excellent
170026goodexcellent41excellent
160016goodexcellent21excellent
150017goodexcellent21excellent
140016goodexcellent21excellent
130020goodexcellent21excellent
120016goodexcellent31excellent
110020goodexcellent31excellent
100024goodexcellent31excellent