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
20006excellentexcellent11excellent
19003excellentexcellent11excellent
18004excellentexcellent11excellent
17007excellentexcellent21excellent
160010excellentexcellent21excellent
150011excellentexcellent21excellent
140017goodexcellent31excellent
130016goodexcellent31excellent
120020goodexcellent51excellent
110030goodexcellent71excellent
100041lightly pollutedexcellent111excellent
090060lightly pollutedexcellent121excellent
080065moderately pollutedgood131excellent
070060lightly pollutedexcellent111excellent
060054lightly pollutedexcellent111excellent
050037lightly pollutedexcellent81excellent
040039lightly pollutedexcellent81excellent
030036goodexcellent71excellent
020031goodexcellent61excellent
010028goodexcellent61excellent
000028goodexcellent51excellent
230028goodexcellent51excellent
220034goodexcellent71excellent
210037lightly pollutedexcellent91excellent