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
19009excellentexcellent11excellent
18008excellentexcellent11excellent
17008excellentexcellent11excellent
16008excellentexcellent11excellent
15007excellentexcellent11excellent
140033goodexcellent11excellent
130013excellentexcellent21excellent
120017excellentexcellent21excellent
110014excellentexcellent11excellent
10009excellentexcellent21excellent
090036goodexcellent51excellent
080033goodexcellent41excellent
070032goodexcellent51excellent
060034goodexcellent51excellent
050025goodexcellent31excellent
040029goodexcellent51excellent
030043goodexcellent71excellent
020031goodexcellent51excellent
010020excellentexcellent41excellent
000021goodexcellent41excellent
230025goodexcellent41excellent
220025goodexcellent41excellent
210013excellentexcellent31excellent
200015excellentexcellent31excellent