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
21007excellentexcellent11excellent
20006excellentexcellent11excellent
19006excellentexcellent11excellent
18005excellentexcellent11excellent
17005excellentexcellent11excellent
16004excellentexcellent11excellent
15005excellentexcellent11excellent
14006excellentexcellent11excellent
13009excellentexcellent21excellent
12007excellentexcellent21excellent
11007excellentexcellent11excellent
100011excellentexcellent21excellent
090017excellentexcellent41excellent
080021goodexcellent61excellent
070027goodexcellent51excellent
060019excellentexcellent31excellent
050016excellentexcellent41excellent
040018excellentexcellent31excellent
030017excellentexcellent21excellent
020012excellentexcellent31excellent
010013excellentexcellent31excellent
000013excellentexcellent31excellent
230016excellentexcellent31excellent
220017excellentexcellent41excellent