Air quality index [µg/m3]:
excellent ≤ 20
good ≤ 60
lightly polluted ≤ 100
moderately polluted ≤ 140
heavily polluted ≤ 200
severely polluted > 200
PM 2.5
[µg/m3]
PM 10
HOUR OPOLSKA ST. ROOF (BEFORE FILTERS)  AIR SUPPLIED TO OFFICES
040062lightly pollutedexcellent71excellent
030058goodexcellent81excellent
020053goodexcellent81excellent
010066lightly pollutedexcellent81excellent
000090lightly pollutedexcellent101excellent
230047goodexcellent71excellent
220044goodexcellent61excellent
210036goodexcellent51excellent
200019excellentexcellent41excellent
190014excellentexcellent41excellent
180031goodexcellent61excellent
170035goodexcellent51excellent
160031goodexcellent51excellent
150017excellentexcellent31excellent
140010excellentexcellent31excellent
130012excellentexcellent21excellent
120014excellentexcellent21excellent
110012excellentexcellent21excellent
100014excellentexcellent31excellent
090014excellentexcellent11excellent
080023goodexcellent21excellent
070011excellentexcellent21excellent
060014excellentexcellent21excellent
050014excellentexcellent21excellent