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
150012excellentexcellent11excellent
140010excellentexcellent11excellent
130011excellentexcellent11excellent
12009excellentexcellent21excellent
110010excellentexcellent11excellent
100012excellentexcellent21excellent
090014goodexcellent21excellent
080016goodexcellent21excellent
070015goodexcellent21excellent
060014goodexcellent21excellent
050014goodexcellent21excellent
040018goodexcellent21excellent
030018goodexcellent21excellent
020018goodexcellent31excellent
010020goodexcellent31excellent
000051lightly pollutedexcellent31excellent
230018goodexcellent31excellent
220014goodexcellent21excellent
210011excellentexcellent11excellent
20009excellentexcellent11excellent
19006excellentexcellent11excellent
18006excellentexcellent11excellent
17005excellentexcellent11excellent
16005excellentexcellent11excellent