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
18006excellentexcellent11excellent
17005excellentexcellent11excellent
16005excellentexcellent11excellent
15006excellentexcellent11excellent
14007excellentexcellent11excellent
13009excellentexcellent11excellent
12006excellentexcellent11excellent
11007excellentexcellent11excellent
10009excellentexcellent11excellent
090011excellentexcellent21excellent
080014excellentexcellent21excellent
070023goodexcellent31excellent
060024goodexcellent41excellent
050015excellentexcellent21excellent
040014excellentexcellent21excellent
030085lightly pollutedexcellent21excellent
020014excellentexcellent21excellent
010014excellentexcellent21excellent
000011excellentexcellent11excellent
23009excellentexcellent11excellent
220010excellentexcellent11excellent
21009excellentexcellent11excellent
20006excellentexcellent11excellent
19009excellentexcellent21excellent