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
020031goodexcellent41excellent
010035goodexcellent21excellent
000028goodexcellent21excellent
230022goodexcellent21excellent
220022goodexcellent21excellent
210011excellentexcellent11excellent
200010excellentexcellent11excellent
190010excellentexcellent11excellent
180013excellentexcellent11excellent
170011excellentexcellent11excellent
160014excellentexcellent21excellent
150019excellentexcellent21excellent
140016excellentexcellent21excellent
130017excellentexcellent21excellent
120012excellentexcellent21excellent
110017excellentexcellent21excellent
100021goodexcellent21excellent
090023goodexcellent21excellent
080026goodexcellent31excellent
070027goodexcellent31excellent
060022goodexcellent31excellent
050023goodexcellent21excellent
040031goodexcellent31excellent
030030goodexcellent31excellent