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
14008excellentexcellent11excellent
130014excellentexcellent11excellent
120014excellentexcellent11excellent
110016excellentexcellent21excellent
100011excellentexcellent11excellent
09009excellentexcellent11excellent
080020excellentexcellent11excellent
070019excellentexcellent11excellent
060015excellentexcellent11excellent
050015excellentexcellent11excellent
040024goodexcellent21excellent
030034goodexcellent31excellent
020032goodexcellent21excellent
010027goodexcellent11excellent
000045goodexcellent21excellent
230037goodexcellent51excellent
220044goodexcellent21excellent
210049goodexcellent21excellent
200064lightly pollutedexcellent21excellent
190078lightly pollutedexcellent21excellent
180046goodexcellent21excellent
170031goodexcellent11excellent
160036goodexcellent21excellent
150047goodexcellent11excellent