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
200011excellentexcellent31excellent
190011excellentexcellent31excellent
180010excellentexcellent11excellent
17008excellentexcellent11excellent
16008excellentexcellent11excellent
15008excellentexcellent11excellent
14006excellentexcellent11excellent
13006excellentexcellent21excellent
120014goodexcellent21excellent
110017goodexcellent21excellent
100016goodexcellent21excellent
090012excellentexcellent21excellent
080016goodexcellent31excellent
070020goodexcellent31excellent
060026goodexcellent51excellent
050035goodexcellent61excellent
040034goodexcellent51excellent
030031goodexcellent51excellent
020030goodexcellent51excellent
010037lightly pollutedexcellent51excellent
000052lightly pollutedexcellent71excellent
230023goodexcellent51excellent
220024goodexcellent41excellent
210021goodexcellent31excellent