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
20005excellentexcellent21excellent
19003excellentexcellent11excellent
18003excellentexcellent11excellent
17002excellentexcellent11excellent
16002excellentexcellent11excellent
15005excellentexcellent11excellent
14005excellentexcellent11excellent
13002excellentexcellent11excellent
12005excellentexcellent11excellent
110018excellentexcellent11excellent
10005excellentexcellent11excellent
09003excellentexcellent11excellent
08005excellentexcellent11excellent
07005excellentexcellent11excellent
06003excellentexcellent11excellent
05002excellentexcellent11excellent
04004excellentexcellent11excellent
03006excellentexcellent11excellent
020012excellentexcellent11excellent
01008excellentexcellent11excellent
00007excellentexcellent11excellent
23006excellentexcellent11excellent
22006excellentexcellent11excellent
21003excellentexcellent11excellent