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
130028goodexcellent61excellent
120038goodexcellent71excellent
110035goodexcellent91excellent
100043goodexcellent91excellent
090054goodexcellent91excellent
080060goodexcellent101excellent
070051goodexcellent91excellent
060055goodexcellent91excellent
050054goodexcellent91excellent
040049goodexcellent81excellent
030054goodexcellent81excellent
020052goodexcellent91excellent
010048goodexcellent81excellent
000041goodexcellent71excellent
230036goodexcellent71excellent
220026goodexcellent51excellent
210036goodexcellent71excellent
200039goodexcellent61excellent
190024goodexcellent41excellent
180011excellentexcellent21excellent
170011excellentexcellent21excellent
160011excellentexcellent11excellent
150010excellentexcellent11excellent
140010excellentexcellent21excellent