Air quality index [µg/m3]:
excellent ≤ 20
good ≤ 60
lightly polluted ≤ 100
moderately polluted ≤ 140
heavily polluted ≤ 200
severely polluted > 200
PM 2.5
[µg/m3]
PM 10
HOUR OPOLSKA ST. ROOF (BEFORE FILTERS)  AIR SUPPLIED TO OFFICES
040054goodexcellent61excellent
030034goodexcellent31excellent
020028goodexcellent31excellent
010025goodexcellent31excellent
000028goodexcellent31excellent
230025goodexcellent31excellent
220017excellentexcellent21excellent
210024goodexcellent21excellent
200029goodexcellent31excellent
190036goodexcellent41excellent
180024goodexcellent21excellent
170016excellentexcellent21excellent
16008excellentexcellent11excellent
15007excellentexcellent11excellent
14005excellentexcellent11excellent
130011excellentexcellent21excellent
120014excellentexcellent11excellent
11008excellentexcellent11excellent
100015excellentexcellent11excellent
090024goodexcellent11excellent
080015excellentexcellent11excellent
07009excellentexcellent11excellent
060026goodexcellent31excellent
050022goodexcellent21excellent