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
18005excellentexcellent21excellent
17005excellentexcellent21excellent
16005excellentexcellent21excellent
15005excellentexcellent21excellent
14005excellentexcellent21excellent
13005excellentexcellent21excellent
12005excellentexcellent21excellent
11005excellentexcellent21excellent
10005excellentexcellent11excellent
09005excellentexcellent11excellent
08005excellentexcellent11excellent
07005excellentexcellent11excellent
06005excellentexcellent21excellent
05005excellentexcellent21excellent
04005excellentexcellent21excellent
03005excellentexcellent41excellent
02005excellentexcellent41excellent
01005excellentexcellent31excellent
00005excellentexcellent21excellent
23005excellentexcellent21excellent
22005excellentexcellent11excellent
21005excellentexcellent11excellent
20005excellentexcellent11excellent
19005excellentexcellent11excellent