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
190011excellentexcellent21excellent
180012excellentexcellent21excellent
170011excellentexcellent11excellent
160011excellentexcellent21excellent
150012excellentexcellent31excellent
140013excellentexcellent21excellent
130013excellentexcellent31excellent
120014excellentexcellent31excellent
110021goodexcellent31excellent
100027goodexcellent51excellent
090049goodexcellent101excellent
080068lightly pollutedexcellent141excellent
070085lightly pollutedexcellent151excellent
060078lightly pollutedexcellent131excellent
050087lightly pollutedexcellent142excellent
040055goodexcellent101excellent
030045goodexcellent81excellent
020034goodexcellent61excellent
010025goodexcellent41excellent
000021goodexcellent41excellent
230019excellentexcellent51excellent
220024goodexcellent41excellent
210024goodexcellent61excellent
200021goodexcellent41excellent