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
20006excellentexcellent11excellent
19004excellentexcellent11excellent
18006excellentexcellent11excellent
17007excellentexcellent11excellent
16005excellentexcellent11excellent
15007excellentexcellent11excellent
14006excellentexcellent11excellent
13004excellentexcellent11excellent
12003excellentexcellent11excellent
11003excellentexcellent11excellent
10003excellentexcellent11excellent
09005excellentexcellent11excellent
08005excellentexcellent11excellent
07009excellentexcellent11excellent
06008excellentexcellent21excellent
05007excellentexcellent11excellent
04008excellentexcellent11excellent
030012excellentexcellent21excellent
020013goodexcellent21excellent
010028goodexcellent41excellent
000022goodexcellent51excellent
230020goodexcellent41excellent
220020goodexcellent41excellent
210019goodexcellent41excellent