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
18009excellentexcellent21excellent
170014excellentexcellent21excellent
16008excellentexcellent21excellent
150012excellentexcellent21excellent
140012excellentexcellent21excellent
130013excellentexcellent21excellent
120014excellentexcellent21excellent
110023goodexcellent41excellent
100026goodexcellent51excellent
090035goodexcellent61excellent
080046goodexcellent71excellent
070049goodexcellent71excellent
060042goodexcellent41excellent
050037goodexcellent41excellent
040034goodexcellent51excellent
030036goodexcellent51excellent
020035goodexcellent51excellent
010031goodexcellent41excellent
000035goodexcellent41excellent
230036goodexcellent41excellent
220035goodexcellent51excellent
210025goodexcellent31excellent
200017excellentexcellent11excellent
19008excellentexcellent11excellent