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
130021goodexcellent21excellent
120016goodexcellent31excellent
110020goodexcellent31excellent
100024goodexcellent31excellent
090018goodexcellent31excellent
080024goodexcellent41excellent
070031goodexcellent51excellent
060027goodexcellent51excellent
050028goodexcellent51excellent
040031goodexcellent51excellent
030029goodexcellent51excellent
020035goodexcellent51excellent
010024goodexcellent41excellent
000021goodexcellent41excellent
230025goodexcellent41excellent
220028goodexcellent51excellent
210030goodexcellent51excellent
200036goodexcellent61excellent
190039lightly pollutedexcellent71excellent
180044lightly pollutedexcellent71excellent
170039lightly pollutedexcellent71excellent
160077moderately pollutedexcellent71excellent
150032goodexcellent71excellent
140028goodexcellent61excellent