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
210065moderately pollutedexcellent111excellent
200063moderately pollutedexcellent91excellent
190054lightly pollutedexcellent81excellent
180041lightly pollutedexcellent71excellent
170033goodexcellent61excellent
160030goodexcellent61excellent
150027goodexcellent51excellent
140021goodexcellent41excellent
130021goodexcellent41excellent
120022goodexcellent41excellent
110018goodexcellent41excellent
100018goodexcellent41excellent
090015goodexcellent31excellent
080015goodexcellent31excellent
070014goodexcellent21excellent
060012excellentexcellent21excellent
050012excellentexcellent21excellent
040010excellentexcellent21excellent
030011excellentexcellent31excellent
020012excellentexcellent31excellent
010014goodexcellent31excellent
000017goodexcellent31excellent
230011excellentexcellent31excellent
220013goodexcellent31excellent