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
21004excellentexcellent21excellent
20004excellentexcellent21excellent
19004excellentexcellent11excellent
18004excellentexcellent11excellent
17004excellentexcellent11excellent
16004excellentexcellent11excellent
15004excellentexcellent11excellent
14004excellentexcellent21excellent
13004excellentexcellent21excellent
12004excellentexcellent21excellent
11004excellentexcellent11excellent
10004excellentexcellent11excellent
09004excellentexcellent11excellent
08004excellentexcellent11excellent
07004excellentexcellent11excellent
06004excellentexcellent11excellent
05004excellentexcellent11excellent
04004excellentexcellent21excellent
03004excellentexcellent31excellent
02004excellentexcellent31excellent
01004excellentexcellent21excellent
00004excellentexcellent21excellent
23004excellentexcellent11excellent
22004excellentexcellent11excellent