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
15008excellentexcellent11excellent
14008excellentexcellent11excellent
13008excellentexcellent11excellent
12008excellentexcellent11excellent
11007excellentexcellent11excellent
10005excellentexcellent11excellent
09005excellentexcellent11excellent
08005excellentexcellent11excellent
07005excellentexcellent11excellent
06005excellentexcellent11excellent
05005excellentexcellent11excellent
04005excellentexcellent11excellent
03005excellentexcellent21excellent
02005excellentexcellent21excellent
01005excellentexcellent21excellent
00005excellentexcellent31excellent
23005excellentexcellent31excellent
22005excellentexcellent21excellent
21005excellentexcellent21excellent
20005excellentexcellent21excellent
19005excellentexcellent11excellent
18005excellentexcellent21excellent
17005excellentexcellent21excellent
16005excellentexcellent21excellent