PM 2.5
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]
HOUR OPOLSKA ST. ROOF (BEFORE FILTERS)  AIR SUPPLIED TO OFFICES
070025goodexcellent51excellent
060022goodexcellent41excellent
050016goodexcellent31excellent
040014goodexcellent31excellent
030014goodexcellent31excellent
020014goodexcellent31excellent
010017goodexcellent31excellent
000011excellentexcellent21excellent
230011excellentexcellent21excellent
22009excellentexcellent11excellent
21007excellentexcellent11excellent
20003excellentexcellent11excellent
19004excellentexcellent11excellent
18004excellentexcellent11excellent
17003excellentexcellent11excellent
16003excellentexcellent11excellent
15004excellentexcellent11excellent
14005excellentexcellent11excellent
13003excellentexcellent11excellent
12004excellentexcellent11excellent
11003excellentexcellent11excellent
10003excellentexcellent11excellent
090010excellentexcellent31excellent
080015goodexcellent31excellent