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
080043lightly pollutedexcellent71excellent
070052lightly pollutedexcellent91excellent
060043lightly pollutedexcellent61excellent
050039lightly pollutedexcellent71excellent
040035goodexcellent61excellent
030028goodexcellent51excellent
020027goodexcellent41excellent
010025goodexcellent41excellent
000023goodexcellent41excellent
230020goodexcellent31excellent
220022goodexcellent31excellent
210017goodexcellent31excellent
200016goodexcellent21excellent
190010excellentexcellent21excellent
18008excellentexcellent11excellent
17008excellentexcellent11excellent
16008excellentexcellent21excellent
150011excellentexcellent21excellent
14009excellentexcellent21excellent
13006excellentexcellent11excellent
12008excellentexcellent21excellent
11008excellentexcellent21excellent
100010excellentexcellent11excellent
090010excellentexcellent11excellent