Air quality index [µg/m3]:
excellent ≤ 12
good ≤ 36
lightly polluted ≤ 60
moderately polluted ≤ 84
heavily polluted ≤ 120
severely polluted > 120
PM 2.5
[µg/m3]
PM 10
HOUR OPOLSKA ST. ROOF (BEFORE FILTERS)  AIR SUPPLIED TO OFFICES
20005excellentexcellent11excellent
19006excellentexcellent11excellent
18007excellentexcellent11excellent
17006excellentexcellent11excellent
16007excellentexcellent11excellent
15006excellentexcellent11excellent
14005excellentexcellent11excellent
13004excellentexcellent11excellent
12004excellentexcellent11excellent
11003excellentexcellent11excellent
10006excellentexcellent11excellent
09009excellentexcellent21excellent
080012excellentexcellent21excellent
070015goodexcellent21excellent
060013goodexcellent11excellent
050010excellentexcellent11excellent
04009excellentexcellent11excellent
03008excellentexcellent11excellent
020011excellentexcellent11excellent
010010excellentexcellent21excellent
000010excellentexcellent21excellent
230010excellentexcellent11excellent
22008excellentexcellent11excellent
21008excellentexcellent11excellent