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
18007excellentexcellent11excellent
17008excellentexcellent11excellent
16007excellentexcellent11excellent
15006excellentexcellent11excellent
14007excellentexcellent11excellent
13004excellentexcellent11excellent
12003excellentexcellent11excellent
11005excellentexcellent11excellent
10007excellentexcellent11excellent
090013goodexcellent31excellent
080013goodexcellent31excellent
070011excellentexcellent31excellent
060013goodexcellent31excellent
050010excellentexcellent21excellent
04008excellentexcellent21excellent
03006excellentexcellent11excellent
020010excellentexcellent21excellent
010011excellentexcellent21excellent
000010excellentexcellent21excellent
23008excellentexcellent11excellent
22006excellentexcellent11excellent
21005excellentexcellent11excellent
20005excellentexcellent11excellent
19005excellentexcellent11excellent