Air quality index [µg/m3]:
excellent ≤ 12
good ≤ 36
lightly polluted ≤ 60
moderately polluted ≤ 84
heavily polluted ≤ 120
severely polluted > 120
PM 2.5
[µg/m3]
PM 10
HOUR OPOLSKA ST. ROOF (BEFORE FILTERS)  AIR SUPPLIED TO OFFICES
110030goodexcellent71excellent
100026goodexcellent61excellent
090023goodexcellent51excellent
080023goodexcellent41excellent
070028goodexcellent51excellent
060027goodexcellent51excellent
050025goodexcellent51excellent
040026goodexcellent51excellent
030026goodexcellent41excellent
020025goodexcellent41excellent
010025goodexcellent51excellent
000028goodexcellent71excellent
230039lightly pollutedexcellent71excellent
220037lightly pollutedexcellent61excellent
210040lightly pollutedexcellent61excellent
200033goodexcellent61excellent
190026goodexcellent41excellent
180025goodexcellent31excellent
170015goodexcellent21excellent
160011excellentexcellent21excellent
15009excellentexcellent21excellent
14009excellentexcellent21excellent
13007excellentexcellent21excellent
12007excellentexcellent21excellent