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
03005excellentexcellent41excellent
02005excellentexcellent41excellent
01005excellentexcellent31excellent
00005excellentexcellent21excellent
23005excellentexcellent21excellent
22005excellentexcellent11excellent
21005excellentexcellent11excellent
20005excellentexcellent11excellent
19005excellentexcellent11excellent
18005excellentexcellent11excellent
17006excellentexcellent11excellent
160016excellentexcellent11excellent
150032goodexcellent11excellent
140019excellentexcellent11excellent
130017excellentexcellent11excellent
12009excellentexcellent11excellent
11009excellentexcellent11excellent
100013excellentexcellent11excellent
090015excellentexcellent31excellent
080021goodexcellent21excellent
070025goodexcellent21excellent
060022goodexcellent31excellent
050018excellentexcellent21excellent
040021goodexcellent21excellent