PM 2.5
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]
HOUR OPOLSKA ST. ROOF (BEFORE FILTERS)  AIR SUPPLIED TO OFFICES
220045lightly pollutedexcellent91excellent
210048lightly pollutedexcellent81excellent
200048lightly pollutedexcellent81excellent
190042lightly pollutedexcellent81excellent
180036goodexcellent81excellent
170030goodexcellent71excellent
160030goodexcellent81excellent
150025goodexcellent71excellent
140024goodexcellent61excellent
130021goodexcellent41excellent
120017goodexcellent51excellent
110018goodexcellent51excellent
100024goodexcellent51excellent
090026goodexcellent51excellent
080028goodexcellent61excellent
070036goodexcellent61excellent
060018goodexcellent51excellent
050025goodexcellent61excellent
040023goodexcellent51excellent
030021goodexcellent51excellent
020033goodexcellent61excellent
010035goodexcellent71excellent
000029goodexcellent61excellent
230029goodexcellent71excellent