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
15008excellentexcellent11excellent
14008excellentexcellent11excellent
13006excellentexcellent11excellent
12007excellentexcellent11excellent
11005excellentexcellent11excellent
100010excellentexcellent21excellent
090015excellentexcellent21excellent
080020excellentexcellent31excellent
070023goodexcellent31excellent
060020excellentexcellent31excellent
050017excellentexcellent21excellent
040016excellentexcellent21excellent
030013excellentexcellent21excellent
020019excellentexcellent21excellent
010019excellentexcellent31excellent
000018excellentexcellent21excellent
230017excellentexcellent21excellent
220016excellentexcellent11excellent
210013excellentexcellent21excellent
200013excellentexcellent11excellent
190011excellentexcellent11excellent
18009excellentexcellent11excellent
17007excellentexcellent11excellent
16008excellentexcellent11excellent