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
19008excellentexcellent11excellent
18006excellentexcellent11excellent
17004excellentexcellent11excellent
16007excellentexcellent11excellent
15006excellentexcellent11excellent
14006excellentexcellent11excellent
13006excellentexcellent11excellent
12007excellentexcellent11excellent
11008excellentexcellent11excellent
100010excellentexcellent21excellent
090011excellentexcellent21excellent
080013goodexcellent31excellent
070019goodexcellent41excellent
060025goodexcellent31excellent
050021goodexcellent31excellent
040019goodexcellent31excellent
030016goodexcellent31excellent
020016goodexcellent21excellent
010014goodexcellent21excellent
000012excellentexcellent21excellent
230011excellentexcellent21excellent
220012excellentexcellent21excellent
210013goodexcellent31excellent
20008excellentexcellent11excellent