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
070025goodexcellent41excellent
060017goodexcellent31excellent
050015goodexcellent21excellent
040017goodexcellent21excellent
030022goodexcellent21excellent
020011excellentexcellent21excellent
010013goodexcellent21excellent
000015goodexcellent21excellent
230021goodexcellent21excellent
220026goodexcellent21excellent
210010excellentexcellent11excellent
20007excellentexcellent11excellent
19006excellentexcellent11excellent
18006excellentexcellent11excellent
17007excellentexcellent11excellent
160010excellentexcellent11excellent
15007excellentexcellent11excellent
14006excellentexcellent11excellent
13006excellentexcellent11excellent
12006excellentexcellent11excellent
11007excellentexcellent21excellent
100010excellentexcellent21excellent
090017goodexcellent41excellent
080028goodexcellent71excellent