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
090014goodexcellent21excellent
080017goodexcellent21excellent
070026goodexcellent41excellent
060038lightly pollutedexcellent51excellent
050035goodexcellent61excellent
040037lightly pollutedexcellent61excellent
030035goodexcellent61excellent
020040lightly pollutedexcellent71excellent
010041lightly pollutedexcellent71excellent
000041lightly pollutedexcellent71excellent
230037lightly pollutedexcellent71excellent
220039lightly pollutedexcellent61excellent
210037lightly pollutedexcellent51excellent
200023goodexcellent41excellent
190024goodexcellent51excellent
180024goodexcellent51excellent
170024goodexcellent41excellent
160020goodexcellent41excellent
150018goodexcellent41excellent
140015goodexcellent41excellent
130017goodexcellent51excellent
120020goodexcellent61excellent
110031goodexcellent81excellent
100037lightly pollutedexcellent81excellent