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
2200108heavily pollutedexcellent41excellent
2100110heavily pollutedexcellent51excellent
2000105heavily pollutedexcellent51excellent
190091heavily pollutedexcellent81excellent
180082moderately pollutedexcellent111excellent
170055lightly pollutedexcellent61excellent
160045lightly pollutedexcellent71excellent
150036goodexcellent51excellent
140027goodexcellent51excellent
130025goodexcellent41excellent
120025goodexcellent41excellent
110029goodexcellent41excellent
100025goodexcellent41excellent
090030goodexcellent51excellent
080029goodexcellent31excellent
070026goodexcellent11excellent
060038lightly pollutedexcellent11excellent
050039lightly pollutedexcellent11excellent
040029goodexcellent11excellent
030022goodexcellent21excellent
020024goodexcellent21excellent
010020goodexcellent21excellent
000019goodexcellent21excellent
230024goodexcellent21excellent