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
070016excellentexcellent21excellent
060020excellentexcellent21excellent
050016excellentexcellent21excellent
040011excellentexcellent21excellent
030013excellentexcellent21excellent
020013excellentexcellent31excellent
010015excellentexcellent31excellent
000012excellentexcellent31excellent
230016excellentexcellent31excellent
22009excellentexcellent31excellent
210011excellentexcellent31excellent
200020excellentexcellent41excellent
190021goodexcellent51excellent
180017excellentexcellent21excellent
170013excellentexcellent31excellent
160015excellentexcellent21excellent
150014excellentexcellent21excellent
140011excellentexcellent11excellent
130010excellentexcellent21excellent
120022goodexcellent31excellent
110028goodexcellent31excellent
100028goodexcellent21excellent
090022goodexcellent31excellent
080030goodexcellent41excellent