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
080019excellentexcellent21excellent
070019excellentexcellent31excellent
060014excellentexcellent21excellent
050012excellentexcellent11excellent
040012excellentexcellent21excellent
030018excellentexcellent21excellent
020020excellentexcellent21excellent
010019excellentexcellent31excellent
000020excellentexcellent31excellent
230022goodexcellent31excellent
220023goodexcellent31excellent
210013excellentexcellent11excellent
200010excellentexcellent11excellent
19006excellentexcellent11excellent
18003excellentexcellent11excellent
17003excellentexcellent11excellent
16005excellentexcellent11excellent
15002excellentexcellent11excellent
14002excellentexcellent11excellent
13006excellentexcellent11excellent
12003excellentexcellent21excellent
11004excellentexcellent11excellent
10003excellentexcellent11excellent
09007excellentexcellent11excellent