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
21005excellentexcellent11excellent
20005excellentexcellent11excellent
19004excellentexcellent11excellent
18008excellentexcellent11excellent
17008excellentexcellent11excellent
16009excellentexcellent21excellent
15008excellentexcellent11excellent
14008excellentexcellent11excellent
13007excellentexcellent11excellent
12007excellentexcellent21excellent
11008excellentexcellent11excellent
100010excellentexcellent11excellent
090011excellentexcellent11excellent
080011excellentexcellent21excellent
070012excellentexcellent21excellent
060020excellentexcellent21excellent
050016excellentexcellent21excellent
040011excellentexcellent21excellent
030013excellentexcellent21excellent
020013excellentexcellent31excellent
010015excellentexcellent31excellent
000012excellentexcellent31excellent
230016excellentexcellent31excellent
22009excellentexcellent31excellent