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
19003excellentexcellent11excellent
18005excellentexcellent11excellent
17005excellentexcellent11excellent
16005excellentexcellent11excellent
15007excellentexcellent11excellent
14005excellentexcellent11excellent
130013goodexcellent11excellent
12008excellentexcellent21excellent
11009excellentexcellent21excellent
10008excellentexcellent21excellent
09008excellentexcellent21excellent
080010excellentexcellent31excellent
070017goodexcellent31excellent
060014goodexcellent31excellent
050016goodexcellent31excellent
040014goodexcellent31excellent
030017goodexcellent31excellent
020016goodexcellent31excellent
010014goodexcellent31excellent
000014goodexcellent31excellent
230013goodexcellent31excellent
220010excellentexcellent21excellent
21009excellentexcellent21excellent
20007excellentexcellent21excellent