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
070044goodexcellent81excellent
060036goodexcellent71excellent
050028goodexcellent51excellent
040025goodexcellent51excellent
030025goodexcellent51excellent
020025goodexcellent51excellent
010032goodexcellent41excellent
000021goodexcellent31excellent
230021goodexcellent31excellent
220016excellentexcellent21excellent
210013excellentexcellent21excellent
20008excellentexcellent11excellent
19006excellentexcellent11excellent
18007excellentexcellent11excellent
17005excellentexcellent11excellent
16006excellentexcellent11excellent
15006excellentexcellent11excellent
14008excellentexcellent11excellent
13004excellentexcellent11excellent
12006excellentexcellent11excellent
11004excellentexcellent11excellent
10007excellentexcellent11excellent
090019excellentexcellent31excellent
080025goodexcellent51excellent