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
200040goodexcellent61excellent
190028goodexcellent51excellent
180016excellentexcellent21excellent
170013excellentexcellent21excellent
160010excellentexcellent11excellent
150010excellentexcellent11excellent
140011excellentexcellent11excellent
130010excellentexcellent21excellent
12009excellentexcellent11excellent
110011excellentexcellent21excellent
100011excellentexcellent21excellent
090017excellentexcellent31excellent
080033goodexcellent31excellent
070031goodexcellent31excellent
060021goodexcellent21excellent
050022goodexcellent31excellent
040015excellentexcellent21excellent
030012excellentexcellent11excellent
020010excellentexcellent11excellent
010010excellentexcellent11excellent
00008excellentexcellent11excellent
230015excellentexcellent31excellent
220025goodexcellent51excellent
210041goodexcellent61excellent