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
080020excellentexcellent21excellent
070021goodexcellent11excellent
060027goodexcellent21excellent
050038goodexcellent21excellent
040043goodexcellent21excellent
030053goodexcellent31excellent
020057goodexcellent31excellent
010086lightly pollutedexcellent31excellent
000090lightly pollutedexcellent31excellent
230085lightly pollutedexcellent21excellent
220078lightly pollutedexcellent31excellent
210063lightly pollutedexcellent31excellent
200066lightly pollutedexcellent31excellent
190062lightly pollutedexcellent21excellent
180062lightly pollutedexcellent21excellent
170070lightly pollutedexcellent31excellent
1600101moderately pollutedexcellent31excellent
150088lightly pollutedexcellent31excellent
140062lightly pollutedexcellent31excellent
130068lightly pollutedexcellent31excellent
120067lightly pollutedexcellent31excellent
110055goodexcellent41excellent
100054goodexcellent41excellent
090058goodexcellent41excellent