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
180013excellentexcellent21excellent
170011excellentexcellent22excellent
160012excellentexcellent21excellent
150018excellentexcellent31excellent
140014excellentexcellent31excellent
130011excellentexcellent21excellent
120015excellentexcellent21excellent
110014excellentexcellent21excellent
100018excellentexcellent21excellent
090017excellentexcellent21excellent
080015excellentexcellent21excellent
070011excellentexcellent11excellent
060011excellentexcellent11excellent
050010excellentexcellent11excellent
04008excellentexcellent11excellent
03007excellentexcellent11excellent
02005excellentexcellent11excellent
01006excellentexcellent21excellent
00007excellentexcellent11excellent
230012excellentexcellent21excellent
220010excellentexcellent21excellent
21006excellentexcellent31excellent
20009excellentexcellent21excellent
19008excellentexcellent11excellent