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
070026goodexcellent41excellent
060041goodexcellent21excellent
050038goodexcellent11excellent
040041goodexcellent21excellent
030040goodexcellent31excellent
020024goodexcellent21excellent
010019excellentexcellent21excellent
000017excellentexcellent11excellent
23008excellentexcellent11excellent
220010excellentexcellent11excellent
21005excellentexcellent11excellent
20005excellentexcellent11excellent
19004excellentexcellent11excellent
18004excellentexcellent11excellent
170033goodexcellent11excellent
160011excellentexcellent21excellent
150063lightly pollutedexcellent11excellent
140010excellentexcellent11excellent
13009excellentexcellent11excellent
120010excellentexcellent11excellent
110013excellentexcellent11excellent
100015excellentexcellent21excellent
090018excellentexcellent21excellent
080026goodexcellent41excellent