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
09005excellentexcellent11excellent
08005excellentexcellent11excellent
07005excellentexcellent11excellent
06005excellentexcellent21excellent
05005excellentexcellent21excellent
04005excellentexcellent21excellent
03005excellentexcellent41excellent
02005excellentexcellent41excellent
01005excellentexcellent31excellent
00005excellentexcellent21excellent
23005excellentexcellent21excellent
22005excellentexcellent11excellent
21005excellentexcellent11excellent
20005excellentexcellent11excellent
19005excellentexcellent11excellent
18005excellentexcellent11excellent
17006excellentexcellent11excellent
160016excellentexcellent11excellent
150032goodexcellent11excellent
140019excellentexcellent11excellent
130017excellentexcellent11excellent
12009excellentexcellent11excellent
11009excellentexcellent11excellent
100013excellentexcellent11excellent