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
1500300severely pollutedexcellent11excellent
1400152heavily pollutedexcellent11excellent
130026goodexcellent11excellent
120013excellentexcellent11excellent
110020excellentexcellent42excellent
100061lightly pollutedexcellent31excellent
090083lightly pollutedexcellent21excellent
080014excellentexcellent21excellent
070024goodexcellent21excellent
060010excellentexcellent11excellent
05008excellentexcellent21excellent
040010excellentexcellent21excellent
030081lightly pollutedexcellent21excellent
020026goodexcellent21excellent
010010excellentexcellent21excellent
000061lightly pollutedexcellent21excellent
23007excellentexcellent11excellent
22009excellentexcellent21excellent
21008excellentexcellent11excellent
20006excellentexcellent11excellent
19007excellentexcellent11excellent
18009excellentexcellent11excellent
170010excellentexcellent11excellent
16007excellentexcellent11excellent