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
070089lightly pollutedexcellent71excellent
060048goodexcellent61excellent
050050goodexcellent61excellent
040053goodexcellent71excellent
030056goodexcellent61excellent
020065lightly pollutedexcellent71excellent
010043goodexcellent41excellent
000036goodexcellent51excellent
230044goodexcellent51excellent
220049goodexcellent61excellent
210057goodexcellent71excellent
200065lightly pollutedexcellent81excellent
190075lightly pollutedexcellent91excellent
180081lightly pollutedexcellent91excellent
170075lightly pollutedexcellent91excellent
1600125moderately pollutedexcellent91excellent
150061lightly pollutedexcellent101excellent
140055goodexcellent81excellent
130053goodexcellent61excellent
120046goodexcellent41excellent
110039goodexcellent31excellent
100026goodexcellent21excellent
090020excellentexcellent21excellent
080021goodexcellent21excellent