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
20005excellentexcellent11excellent
19003excellentexcellent11excellent
18005excellentexcellent11excellent
17005excellentexcellent11excellent
16006excellentexcellent11excellent
15007excellentexcellent11excellent
140010excellentexcellent11excellent
13008excellentexcellent11excellent
12008excellentexcellent11excellent
11008excellentexcellent11excellent
10007excellentexcellent11excellent
09007excellentexcellent11excellent
080012excellentexcellent21excellent
070026goodexcellent41excellent
060041goodexcellent21excellent
050038goodexcellent11excellent
040041goodexcellent21excellent
030040goodexcellent31excellent
020024goodexcellent21excellent
010019excellentexcellent21excellent
000017excellentexcellent11excellent
23008excellentexcellent11excellent
220010excellentexcellent11excellent
21005excellentexcellent11excellent